动态生成RDLC报表

前段时间，做了RDLC报表，主要是三块功能：

1、从DataGrid提取（包括最新的增删改）数据，自动生成对应的RDLC报表文件(以流的形式驻存在内存中)，用ReportViewer类来展示、打印、排版、预览、分页

　  提供一个提取任意控件数据的通用接口，然后拼接成DataTable这种网状的格子。DataGrid里修改、增加、删除等数据变动，立即同步更新到报表

2、给一个简单的RDLC模板，提供表头的字体格式和表内部数据等样式相关的信息，然后再用DataGrid里提取的数据，生成DataTable和其它必需信息，填充到报表里，

     自动调整报表格式

3、做了一个TreeView，很简单；根据报表文件名称，切换左侧TreeView的Item，就加载不同的报表，显示数据。用了一点反射的知识

转载请注明出处： https://www.cnblogs.com/NaughtyCat/p/auto-generate-report.html

第一步：根据 Report Definition Language (RDL) 生成对应的类和命名空间。

1、去 http://schemas.microsoft.com/sqlserver/reporting/2010/01/reportdefinition/ 下载ReportDefinition2010.xsd。

注意：ReportDefinition和Visual Studio发布的有个时间差，官网上有ReportDefinition2005版和ReportDefinition2008版。ReportDefinition2005版，VS2008及以后才支持；

ReportDefinition2008版，VS2010及以后支持。2010版，要VS2012以后才支持。我的是VS2010，用ReportDefinition2008版就好。

2、找XML Schema Definition Tool (Xsd.exe)，Windows操作系统会自带(微软会自带很多功能强大的exe，要是开源就好了）。For more detail,please refer to：

官网有详细的命令使用说明 https://msdn.microsoft.com/en-us/library/x6c1kb0s(v=vs.110).aspx

 Below is my CMD in administator mode:

C:Program Files (x86)Microsoft SDKsWindowsv7.0ABinx64>xsd

/c /n:RDLC  

/out:C:UsersadminDesktopRDLCReportResearch

C:UsersadminDesktopRDLCReportResearchReportDefinition.xsd

 完了，生成的是这么个样子（ReportDefinition2005的生成出来有8000行左右，ReportDefinition2008的及以后有10000多行，贴一部分，样子参照下面代码）

using System.Xml.Serialization;
    
    
    /// <remarks/>
    [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "2.0.50727.3038")]
    [System.SerializableAttribute()]
    [System.Diagnostics.DebuggerStepThroughAttribute()]
    [System.ComponentModel.DesignerCategoryAttribute("code")]
    [System.Xml.Serialization.XmlTypeAttribute(AnonymousType=true, Namespace="http://schemas.microsoft.com/sqlserver/reporting/2008/01/reportdefinition")]
    [System.Xml.Serialization.XmlRootAttribute(Namespace="http://schemas.microsoft.com/sqlserver/reporting/2008/01/reportdefinition", IsNullable=false)]
    public partial class Report {
        
        private object[] itemsField;
        
        private ItemsChoiceType80[] itemsElementNameField;
        
        private System.Xml.XmlAttribute[] anyAttrField;
        
        /// <remarks/>
        [System.Xml.Serialization.XmlAnyElementAttribute()]
        [System.Xml.Serialization.XmlElementAttribute("Author", typeof(string))]
        [System.Xml.Serialization.XmlElementAttribute("AutoRefresh", typeof(uint))]
        [System.Xml.Serialization.XmlElementAttribute("Body", typeof(BodyType))]
        [System.Xml.Serialization.XmlElementAttribute("Classes", typeof(ClassesType))]
        [System.Xml.Serialization.XmlElementAttribute("Code", typeof(string))]
        [System.Xml.Serialization.XmlElementAttribute("CodeModules", typeof(CodeModulesType))]
        [System.Xml.Serialization.XmlElementAttribute("ConsumeContainerWhitespace", typeof(bool))]

第二步：创建RDLCGenerator类和TablixRDLCGenerator类

1、根据下载的Report Definition Language（RDL）和一个创建的简单的RDLC文件，知道RDLC文件基本要有哪几部分组成；然后层层嵌套创建就出来了，很简单。

2-1、Tablix是关键数据区，GotReportViewer上面的例子，DynamicMatrix和DynamicTable是根据RDL2005来做的，RDL2008以后，就是一个Tablix：

2-2、Tablix的主要数据区域： TablixHierarchyType CreateTablixColumnHierarchy()和TablixHierarchyType CreateTablixRowHierarchy()

2-3、对于HeaderRow和DataRow关键就在下面的不同。

        private LocIDStringWithDataTypeAttribute CreateTablixTextRunValue(bool isHeaderCell, string name)
        {
            LocIDStringWithDataTypeAttribute v = new LocIDStringWithDataTypeAttribute();
            v.Value = isHeaderCell ? name : "=Fields!" + name + ".Value";
            v.DataType = StringWithDataTypeAttributeDataType.String;
            return v;
        }

 2-4、DataSet的名字一定要和ReportDataSource里的名字完全匹配

RdlcGenerator的Read和Write方法比较重要。

    /// table + matrix = tablix
    /// Microsoft 用一个tablix来支持Table（表）, Matrix（矩阵） and List（列表）这三种报表项
    /// 整合了table和matrix的功能

       #region Properties

        // DataGrid 的DataGridColumn的Header
        private List<string> headerNames = new List<string>();
        public List<string> HeaderNames
        {
            get { return headerNames; }
        }

        // 对应DataGrid Binding的Path
        private List<string> fieldNames = new List<string>();
        public List<string> FieldNames
        {
            get { return fieldNames; }
        }

        // 对应DataGrid Column的ActualWdith（因为实际的窗口宽度会重新计算）
        private List<double> widths = new List<double>();
        public List<double> Widths
        {
            get { return widths; }
        }

        // 如果没有更新过页面设置，用ReportViewer的默认页面设置；否则用最新的页面设置
        public PageSettings PageSettings { get; set; }

        public string Headline { get; set; }

        public string DataSourceName { get; set; }

        public string DataSetName { get; set; }

        #endregion

        #region Methods

        // 一层套一层，把xml构造出来
        private Report CreateReport()
        {
            Report report = new Report();

            report.Items = new object[]
            {
                CreateDataSources(),
                CreateDataSets(),
                CreateBody(),
                CalcReportWidth(),
                CreatePage(),
            };
            report.ItemsElementName = new ItemsChoiceType80[]
            {
                ItemsChoiceType80.DataSources,
                ItemsChoiceType80.DataSets,
                ItemsChoiceType80.Body,
                ItemsChoiceType80.Width,
                ItemsChoiceType80.Page,
            };

            return report;
        }

        private DataSourcesType CreateDataSources()
        {
            DataSourcesType dataSources = new DataSourcesType();
            dataSources.DataSource = new DataSourceType[] { CreateDataSource() };
            return dataSources;
        }

        private DataSourceType CreateDataSource()
        {
            DataSourceType dataSource = new DataSourceType();
            dataSource.Name = String.IsNullOrEmpty(DataSetName) ? "TBReport" : DataSetName;
            dataSource.Items = new object[] { CreateDataSourceConnectionProperties() };
            return dataSource;
        }

        private ConnectionPropertiesType CreateDataSourceConnectionProperties()
        {
            ConnectionPropertiesType connectionProperties = new ConnectionPropertiesType();

            connectionProperties.Items = new object[]
            {
                "System.Data.DataSet",
                "/* Local Connection */",
            };
            connectionProperties.ItemsElementName = new ItemsChoiceType[]
            {
                ItemsChoiceType.DataProvider,
                ItemsChoiceType.ConnectString,
            };

            return connectionProperties;
        }

        private DataSetsType CreateDataSets()
        {
            DataSetsType dataSets = new DataSetsType();
            dataSets.DataSet = new DataSetType[] { CreateDataSet() };
            return dataSets;
        }

        // Query暂时就不要了
        private DataSetType CreateDataSet()
        {
            DataSetType dataSet = new DataSetType();
            // DataSetName写死就好
            dataSet.Name = "CustomerDataSet";
            dataSet.Items = new object[] 
            { 
                CreateDataSetFields(),
                CreateDataSetQuery(),
            };

            return dataSet;
        }

        private FieldsType CreateDataSetFields()
        {
            FieldsType fields = new FieldsType();

            // DataSet的具体field由DataGrid的Bingding的Path值决定
            if ((fieldNames != null) && (fieldNames.Count > 0))
            {
                fields.Field = new FieldType[fieldNames.Count];
                for (int index = 0; index < fieldNames.Count; index++)
                    fields.Field[index] = CreateDataSetField(fieldNames[index]);
            }

            return fields;
        }

        private FieldType CreateDataSetField(string fieldName)
        {
            FieldType field = new FieldType();
            field.Name = fieldName;
            field.Items = new object[]
            {
                fieldName,
                // CreateDataSetFieldValue(),
            };
            return field;
        }

        // 暂时DataType全部用String
        private StringWithDataTypeAttribute CreateDataSetFieldValue()
        {
            StringWithDataTypeAttribute value = new StringWithDataTypeAttribute();
            value.DataType = StringWithDataTypeAttributeDataType.String;
            return value;
        }

        private QueryType CreateDataSetQuery()
        {
            QueryType query = new QueryType();

            query.Items = new object[]
            {
                "TBReport",
                "/* Local Query */",
            };
            query.ItemsElementName = new ItemsChoiceType1[]
            {
                ItemsChoiceType1.DataSourceName,
                ItemsChoiceType1.CommandText,
            };

            return query;
        }

        private BodyType CreateBody()
        {
            BodyType body = new BodyType();

            body.Items = new object[]
            {
                "4.8in",                // Height
                CreateReportItems(),    // ReportItems
                CreateBodyStyle(),
            };
            return body;
        }


        private ReportItemsType CreateReportItems()
        {
            ReportItemsType reportItems = new ReportItemsType();

            // 这是关键数据区域
            TablixRdlcGenerator tablixGen = new TablixRdlcGenerator();
            tablixGen.ResetHeaderNames(HeaderNames);
            tablixGen.ResetFieldNames(FieldNames);

            List<string> tablixColumnWidths;
            DataGridHelper.CalcTablixColumnWidth(CalcReportWidth(), Widths, out tablixColumnWidths);
            tablixGen.ResetWidths(tablixColumnWidths);

            reportItems.Items = new object[] 
            { 
                CreateReportHeadlineTextbox(),
                tablixGen.CreateTablix()
            };


            return reportItems;
        }

        // 创建标题
        private TextboxType CreateReportHeadlineTextbox()
        {
            TextboxType headlineTextbox = new TextboxType();
            headlineTextbox.Name = "headlineTextbox";

            string left = (PageSettings == null) ? "2cm" : ((double)PageSettings.Margins.Left / 100.0).ToString() + "in";
            string width = (PageSettings == null) ? "17cm" :
                ((double)(PageSettings.PaperSize.Width - PageSettings.Margins.Left - PageSettings.Margins.Right) / 100.0).ToString() + "in";

            headlineTextbox.Items = new object[]
            {
                true,
                true,
                CreateHeadlineTextboxParagraphs(),
                left,
                "0.5cm",
                "1.0cm",
                width,
                CreateHeadlineTextboxStyle()

            };
            headlineTextbox.ItemsElementName = new ItemsChoiceType14[]
            {   
                ItemsChoiceType14.CanGrow,
                ItemsChoiceType14.KeepTogether,
                ItemsChoiceType14.Paragraphs,
                ItemsChoiceType14.Left,
                ItemsChoiceType14.Top,
                ItemsChoiceType14.Height,
                ItemsChoiceType14.Width,
                ItemsChoiceType14.Style
            };

            return headlineTextbox;
        }

        private ParagraphsType CreateHeadlineTextboxParagraphs()
        {
            ParagraphsType headlineParagraphs = new ParagraphsType();
            headlineParagraphs.Paragraph = new ParagraphType[] {CreateHeadlineTextboxParagraph()};
            return headlineParagraphs;
        }

        private ParagraphType CreateHeadlineTextboxParagraph()
        {
            ParagraphType pt = new ParagraphType();
            pt.Items = new object[]
            {
                CreateHeadlineTextRuns(),
                CreateHeadlineParagraphStyle()
            };
            pt.ItemsElementName = new ItemsChoiceType12[]
            {
                ItemsChoiceType12.TextRuns,
                ItemsChoiceType12.Style,
            };
            return pt;
        }

        private TextRunsType CreateHeadlineTextRuns()
        {
            TextRunsType trt = new TextRunsType();
            trt.TextRun = new TextRunType[] { CreateHeadlineTextRun() };
            return trt;
        }

        private TextRunType CreateHeadlineTextRun()
        {
            TextRunType trt = new TextRunType();

            trt.Items = new object[]
            {
                CreateHeadLineTextRunValue(),
                CreateHeadlineTextRunStyle()
            };
            trt.ItemsElementName = new ItemsChoiceType11[]
            {
                ItemsChoiceType11.Value,
                ItemsChoiceType11.Style
            };

            return trt;
        }

        private LocIDStringWithDataTypeAttribute CreateHeadLineTextRunValue()
        {
            LocIDStringWithDataTypeAttribute value = new LocIDStringWithDataTypeAttribute();
            value.Value = (Headline == null) ? "标题" : Headline;
            value.DataType = StringWithDataTypeAttributeDataType.String;
            return value;
        }

        private StyleType CreateHeadlineTextRunStyle()
        {
            StyleType st = new StyleType();

            st.Items = new object[]
            {
                "宋体",
                "14pt",
                "Bold",
            };
            st.ItemsElementName = new ItemsChoiceType4[]
            {
                ItemsChoiceType4.FontFamily,
                ItemsChoiceType4.FontSize,
                ItemsChoiceType4.FontWeight
            };

            return st;
        }

        private StyleType CreateHeadlineParagraphStyle()
        {
            StyleType st = new StyleType();
            st.Items = new object[] { "Center" };
            st.ItemsElementName = new ItemsChoiceType4[] { ItemsChoiceType4.TextAlign };
            return st;
        }

        private StyleType CreateHeadlineTextboxStyle()
        {
            StyleType headlineStyle = new StyleType();

            headlineStyle.Items = new object[]
            {
                 CreateHeadlineTextboxBorder(),
                "2pt",
                "2pt",
                "2pt",
                "2pt"
            };
            headlineStyle.ItemsElementName = new ItemsChoiceType4[]
            {
                ItemsChoiceType4.Border,
                ItemsChoiceType4.PaddingLeft,
                ItemsChoiceType4.PaddingRight,
                ItemsChoiceType4.PaddingTop,
                ItemsChoiceType4.PaddingBottom
            };

            return headlineStyle;
        }

        private BorderType CreateHeadlineTextboxBorder()
        {
            BorderType headlineTextboxBorder = new BorderType();
            headlineTextboxBorder.Items = new object[] { "None" };
            headlineTextboxBorder.ItemsElementName = new ItemsChoiceType2[] { ItemsChoiceType2.Style };
            return headlineTextboxBorder;
        }

        private StyleType CreateBodyStyle()
        {
            return new StyleType();
        }

        /// <summary>
        /// 设置页面基本属性—页眉、页脚、页宽、页高、左边距、右边距等
        /// </summary>
        private PageType CreatePage()
        {
            PageType page = new PageType();

            // 根据微软官方文档，PaperSize.Height, PaperSize.Width and Margins的Left, Right, Top, Bottom are in hundredths of an inch.
            string pageHeight = (PageSettings == null) ? "29.7cm" : ((double)PageSettings.PaperSize.Height / 100.0).ToString() + "in";
            string pageWidth = (PageSettings == null) ? "21cm" : ((double)PageSettings.PaperSize.Width / 100.0).ToString() + "in";
            string leftMargin = (PageSettings == null) ? "2cm" : ((double)PageSettings.Margins.Left / 100.0).ToString() + "in";
            string rightMargin = (PageSettings == null) ? "2cm" : ((double)PageSettings.Margins.Right / 100.0).ToString() + "in";
            string topMargin = (PageSettings == null) ? "2cm" : ((double)PageSettings.Margins.Top / 100.0).ToString() + "in";
            string bottomMargin = (PageSettings == null) ? "2cm" : ((double)PageSettings.Margins.Bottom / 100.0).ToString() + "in";

            // TODO:
            // 页眉、页脚（后面再做)
            page.Items = new object[]
            {
                //创建Header不能为空
                // CreatePageHeader(),
                pageHeight,
                pageWidth,
                leftMargin,
                rightMargin,
                topMargin,
                bottomMargin,
                "0.13cm",
            };
            page.ItemsElementName = new ItemsChoiceType77[]
            {
               // ItemsChoiceType77.PageHeader,
                ItemsChoiceType77.PageHeight,
                ItemsChoiceType77.PageWidth,
                ItemsChoiceType77.LeftMargin,
                ItemsChoiceType77.RightMargin,
                ItemsChoiceType77.TopMargin,
                ItemsChoiceType77.BottomMargin,
                ItemsChoiceType77.ColumnSpacing
            };

            return page;
        }

        /// <summary>
        /// PageHeader和PageFooter也只是TextRun里Value的数据不一样
        /// </summary>
        /// <returns></returns>
        private PageSectionType CreatePageHeader()
        {
            return new PageSectionType();
        }

        private PageSectionType CreatePageFooter()
        {
            return new PageSectionType();
        }

        /// <summary>
        /// 把Report序列化为流
        /// </summary>
        /// <param name="stream">根据Report序列化好的流</param>
        public void Write(Stream stream)
        {
            Write(stream, CreateReport());
        }

        public void Write(Stream stream, Report report)
        {
            new XmlSerializer(typeof(Report)).Serialize(stream, report);
        }

        public Report Read(Stream stream)
        {
            return (Report)new XmlSerializer(typeof(Report)).Deserialize(stream);
        }

        /// <summary>
        /// 把和DataGrid对应的rdlc模板文件反序列化为Report
        /// </summary>
        /// <param name="rdlcModelFilePath">和DataGrid对应的rdlc模板文件</param>
        /// <returns>反序列化之后的Report</returns>
        public Report Read(string rdlcModelFilePath)
        {
            using (var stream = new FileStream(rdlcModelFilePath, FileMode.Open))
            {
                return Read(stream);
            }
        }

        public void Write(string rdlcModelFilePath)
        {
            using (var stream = new FileStream(rdlcModelFilePath, FileMode.OpenOrCreate))
            {
                stream.SetLength(0);
                Write(stream);
            }
        }

        /// <summary>
        /// 计算Report的宽度，页宽 - 左边距 - 右边距
        /// </summary>
        /// <returns></returns>
        public string CalcReportWidth()
        {
            string reportWidth = String.Empty;
            const double size = 100.0;
            reportWidth = (PageSettings == null) ? "6.5in" :
                ((double)(PageSettings.PaperSize.Width - PageSettings.Margins.Left - PageSettings.Margins.Right) / size).ToString() + "in";
            return reportWidth;
        }

    public class TablixRdlcGenerator
    {
        #region Properties

        // DataGrid 的DataGridColumn的Header
        private List<string> headerNames = new List<string>();
        public List<string> HeaderNames { get { return headerNames; } }

        // 对应DataGrid Binding的Path
        private List<string> fieldNames = new List<string>();
        public List<string> FieldNames { get { return fieldNames; } }
        public string DataSetName { get; set; }

        // 对应DataGrid Column的ActualWidth
        private List<string> widths = new List<string>();
        public List<string> Widths
        {
            get { return widths; }
        }


        #endregion

        #region Methods

        private void ResetValues(List<string> p, List<string> v)
        {
            p.Clear();
            if (v != null)
            {
                p.AddRange(v);
            }
        }

        public void ResetHeaderNames(List<string> hns)
        {
            ResetValues(HeaderNames, hns);
        }

        public void ResetFieldNames(List<string> fns)
        {
            ResetValues(FieldNames, fns);
        }

        public void ResetWidths(List<string> widths)
        {
            ResetValues(Widths, widths);
        }

        /// <summary>
        /// 矩阵和Table对应的Tablix稍微有些不一样，如对于矩阵，TablixBody里的表头和数据项
        /// 一些值会拆分到TablixColumnHierarchy和TablixRowHierarchy里TablixMember--TablixHeader--CellContents--Textbox
        /// 对于DataGrid我们用最简单的Table就好
        /// </summary>
        /// <returns></returns>
        public TablixType CreateTablix()
        {
            TablixType tablix = new TablixType();
            tablix.Name = "dataGridTablix0";
            tablix.Items = new object[]
            {
               // 创建TablixCorner不能创建个空的
               // CreateTablixCorner(),
                CreateTablixBody(),
                CreateTablixColumnHierarchy(),
                CreateTablixRowHierarchy(),
                true,
                true,
                CreateDataSetName(),
                // Top, Left, Height, Width可具体调整
                // Top, Left ---> Location(距离左上角);Height, Width ---> Size
                // (Tablix的大小,这个Width不管用，具体是由各个TablixColumn的Width之和决定)
                "1.8cm",
                "2cm",
                "2cm",     
                "17cm",
                CreateTablixStyle(),
            };
            tablix.ItemsElementName = new ItemsChoiceType73[]
            {
               // ItemsChoiceType73.TablixCorner,
                ItemsChoiceType73.TablixBody,
                ItemsChoiceType73.TablixColumnHierarchy,
                ItemsChoiceType73.TablixRowHierarchy,
                ItemsChoiceType73.RepeatColumnHeaders,
                ItemsChoiceType73.RepeatRowHeaders,
                ItemsChoiceType73.DataSetName,
                ItemsChoiceType73.Top,
                ItemsChoiceType73.Left,
                ItemsChoiceType73.Height,
                ItemsChoiceType73.Width,
                ItemsChoiceType73.Style
            };

            return tablix;
        }

        /// <summary>
        /// non-essential element, so make it emtpy temprorily
        /// 看样子是表头行，纵向合并的单元格（如纵向两行合并为一行）等相关的
        /// </summary>
        /// <returns></returns>
        private TablixCornerType CreateTablixCorner()
        {
            return new TablixCornerType();
        }

        private TablixBodyType CreateTablixBody()
        {
            TablixBodyType tablixBody = new TablixBodyType();
            tablixBody.Items = new object[]
            {
                CreateTablixColumns(),
                CreateTablixRows(),
            };
            return tablixBody;
        }

        private void EnumHeaderNames(Action<int> act)
        {
            for (int i = 0; i < HeaderNames.Count; i++)
            {
                act(i);
            }
        }

        private TablixColumnsType CreateTablixColumns()
        {
            TablixColumnsType tablixColumns = new TablixColumnsType();

            // 根据DataGridColumns的数量来决定创建几列，并且每列要把具体的宽度传进去
            tablixColumns.Items = new object[headerNames.Count];
            EnumHeaderNames(p =>
            {
                tablixColumns.Items[p] = CreateTablixColumn(p);
            });
            return tablixColumns;
        }

        private TablixColumnType CreateTablixColumn(int index)
        {
            // Width of column,应该根据DataGridColumn.Width来具体设定，暂时给个固定值
            return new TablixColumnType() { Items = new object[] { Widths[index] } };
        }

        /// <summary>
        /// 对于DataGrid只应有两行，一行是Header，一行是数据
        /// 如果有求
        /// </summary>
        /// <returns>TablixRowsType</returns>
        private TablixRowsType CreateTablixRows()
        {
            TablixRowsType tablixRows = new TablixRowsType();
            tablixRows.Items = new object[]
            {
                CreateTablixRowHeader(),
                CreateTablixRowData(),
            };
            return tablixRows;
        }

        private TablixRowType CreateTablixRowType(bool isHeader)
        {
            TablixRowType trt = new TablixRowType();
            trt.Items = new object[]
            {
                "0.23622in",    // Default height
                CreateTablixCells(isHeader),    // Header的Cells的内容和Data的Cells的内容应该不同
            };
            return trt;
        }

        /// <summary>
        /// Tablix Header
        /// </summary>
        /// <returns></returns>
        private TablixRowType CreateTablixRowHeader()
        {
            return CreateTablixRowType(true);
        }

        private TablixRowType CreateTablixRowData()
        {
            return CreateTablixRowType(false);
        }

        private TablixCellsType CreateTablixCells(bool isHeaerCell)
        {
            TablixCellsType tablixCells = new TablixCellsType();
            // 根据DataGridColumns的数量来决定创建几个Cell, Header应传DataGridColumn.Header数据
            tablixCells.Items = new object[HeaderNames.Count];
            EnumHeaderNames(p =>
            {
                tablixCells.Items[p] = CreateTablixCell(isHeaerCell, p);
            });
            return tablixCells;
        }

        private TablixCellType CreateTablixCell(bool isHeaderCell, int index)
        {
            TablixCellType tablixCell = new TablixCellType();
            // 基本的只要"CellContents"就够了
            tablixCell.Items = new object[] { CreateCellContentes(isHeaderCell, index) };
            return tablixCell;
        }

        private CellContentsType CreateCellContentes(bool isheaderCell, int index)
        {
            CellContentsType cellContents = new CellContentsType();

            // 对于DataGrid转换的rdlc，通常是一个Textbox。具体可以是Chart、Image、Line、Rectangle、Subreport等等
            cellContents.Items = new object[] { CreateTablixCellTextbox(isheaderCell, index) };
            cellContents.ItemsElementName = new ItemsChoiceType71[] { ItemsChoiceType71.Textbox };

            return cellContents;
        }

        private TextboxType CreateTablixCellTextbox(bool isHeaderCell, int index)
        {
            TextboxType tablixCellTextbox = new TextboxType();
            // 对于Header的Textbox可以复杂一点，多些字体、背景颜色等字段的定义
            // Data的简单点//isHeaderCell ? headerNames[index] : 
            tablixCellTextbox.Name = isHeaderCell ? "TB" + fieldNames[index] : fieldNames[index];
            tablixCellTextbox.Items = new object[]
            {
                true,
                true,
                CreateTablixCellTextboxParagraphs(isHeaderCell, isHeaderCell ? headerNames[index] : fieldNames[index]),
                CreateTablixCellTextboxStyle(),
            };
            tablixCellTextbox.ItemsElementName = new ItemsChoiceType14[]
            {
                ItemsChoiceType14.CanGrow,
                ItemsChoiceType14.KeepTogether,
                ItemsChoiceType14.Paragraphs,
                ItemsChoiceType14.Style,
            };
            return tablixCellTextbox;
        }

        private ParagraphsType CreateTablixCellTextboxParagraphs(bool isHeaderCell, string name)
        {
            ParagraphsType pt = new ParagraphsType();
            pt.Paragraph = new ParagraphType[] { CreateTablixCellTextboxParagraph(isHeaderCell, name) };
            return pt;
        }

        private ParagraphType CreateTablixCellTextboxParagraph(bool isHeaderCell, string name)
        {
            ParagraphType pt = new ParagraphType();
            pt.Items = new object[]
            {
                CreateTablixCellTextboxParagraphTextRuns(isHeaderCell, name),
                CreateTablixCellTextboxParagraphStyle(isHeaderCell),
            };
            pt.ItemsElementName = new ItemsChoiceType12[]
            {
                ItemsChoiceType12.TextRuns,
                ItemsChoiceType12.Style,
            };
            return pt;
        }

        private TextRunsType CreateTablixCellTextboxParagraphTextRuns(bool isHeaderCell, string name)
        {
            TextRunsType trt = new TextRunsType();
            trt.TextRun = new TextRunType[] { CreateTablixCellTextboxParagraphTextRun(isHeaderCell, name) };
            return trt;
        }

        private TextRunType CreateTablixCellTextboxParagraphTextRun(bool isHeaderCell, string name)
        {
            TextRunType trt = new TextRunType();
            trt.Items = new object[]
            {
                CreateTablixTextRunValue(isHeaderCell, name),
                CreateTablixTextRunStyle(isHeaderCell),
            };
            trt.ItemsElementName = new ItemsChoiceType11[]
            {
                ItemsChoiceType11.Value,
                ItemsChoiceType11.Style,
            };
            return trt;
        }

        // 数据项和Header的关键不一样就在这个了
        private LocIDStringWithDataTypeAttribute CreateTablixTextRunValue(bool isHeaderCell, string name)
        {
            LocIDStringWithDataTypeAttribute v = new LocIDStringWithDataTypeAttribute();
            v.Value = isHeaderCell ? name : "=Fields!" + name + ".Value";
            v.DataType = StringWithDataTypeAttributeDataType.String;
            return v;
        }

        private StyleType CreateTablixTextRunStyle(bool isHeaderCell)
        {
            StyleType st = new StyleType();
            string fontSize = isHeaderCell ? "11pt" : "10pt";
            string FontWeight = isHeaderCell ? "Bold" : "Default";
            st.Items = new object[]
            {
                "宋体",
                fontSize,
                FontWeight,
            };
            st.ItemsElementName = new ItemsChoiceType4[]
            {
                 ItemsChoiceType4.FontFamily,
                 ItemsChoiceType4.FontSize,
                 ItemsChoiceType4.FontWeight,
            };
            return st;
        }

        // 暂时设为表头行“居中对齐”，数据行“靠左对齐”；后面可具体定制表头行和数据行的对齐方式
        private StyleType CreateTablixCellTextboxParagraphStyle(bool isHeaderCell)
        {
            StyleType st = new StyleType();
            st.Items = new object[] { isHeaderCell ? "Center" : "Left" };
            st.ItemsElementName = new ItemsChoiceType4[] { ItemsChoiceType4.TextAlign };
            return st;
        }

        // *****************************
        // Header的Color和Style可以和数据不同，下面是默认的Sytle，可自定义
        //******************************
        private StyleType CreateTablixCellTextboxStyle()
        {
            StyleType st = new StyleType();
            st.Items = new object[]
            {
                 CreateTablixCellTextboxBorder(),
                 "2pt",
                 "2pt",
                 "2pt",
                 "2pt",
            };
            st.ItemsElementName = new ItemsChoiceType4[]
            {
                ItemsChoiceType4.Border,
                // ItemsChoiceType4.BackgroundColor, 默认数据没有BackgroundColor
                ItemsChoiceType4.PaddingLeft,
                ItemsChoiceType4.PaddingRight,
                ItemsChoiceType4.PaddingTop,
                ItemsChoiceType4.PaddingBottom,
            };
            return st;
        }

        private BorderType CreateTablixCellTextboxBorder()
        {
            BorderType bt = new BorderType();
            bt.Items = new object[]
            {
                "Black",
                "Solid",
                "1pt"
            };
            bt.ItemsElementName = new ItemsChoiceType2[]
            {
                ItemsChoiceType2.Color,
                ItemsChoiceType2.Style,
                ItemsChoiceType2.Width
            };
            return bt;
        }

        /// <summary>
        /// 按最简单的来，DataGrid对应的应该是有几个column创建几个TablixMember
        /// </summary>
        private TablixHierarchyType CreateTablixColumnHierarchy()
        {
            return new TablixHierarchyType() { Items = new object[] { CreateTablixColumnMembers() } };
        }

        private TablixMembersType CreateTablixColumnMembers()
        {
            TablixMembersType tmts = new TablixMembersType();
            tmts.TablixMember = new TablixMemberType[HeaderNames.Count];
            EnumHeaderNames(p =>
            {
                tmts.TablixMember[p] = CreateTablixColumnMember();
            });
            return tmts;
        }

        // DataGrid的Column对应的TablixMember创建一个空的就行
        private TablixMemberType CreateTablixColumnMember()
        {
            return new TablixMemberType();
        }

        // DataGrid按最简单的默认的来，即创建2个TablixMember即可
        private TablixHierarchyType CreateTablixRowHierarchy()
        {
            return new TablixHierarchyType() { Items = new object[] { CreateTablixRowMembers() } };
        }

        private TablixMembersType CreateTablixRowMembers()
        {
            TablixMembersType tablixMembers = new TablixMembersType();
            tablixMembers.TablixMember = new TablixMemberType[]
            {
                CreateTablixRowMember0(),
                CreateTablixRowMember1(),
            };
            return tablixMembers;
        }

        private TablixMemberType CreateTablixRowMember0()
        {
            TablixMemberType tmt = new TablixMemberType();

            tmt.Items = new object[]
            {
                CreateTablixRowMemberKeepWithGroup(),
                true,
            };
            tmt.ItemsElementName = new ItemsChoiceType72[]
            {
                ItemsChoiceType72.KeepWithGroup,
                ItemsChoiceType72.RepeatOnNewPage,
            };

            return tmt;
        }

        private TablixMemberTypeKeepWithGroup CreateTablixRowMemberKeepWithGroup()
        {
            return TablixMemberTypeKeepWithGroup.After;
        }

        private TablixMemberType CreateTablixRowMember1()
        {
            TablixMemberType tmt = new TablixMemberType();
            tmt.Items = new object[] { CreateTablixRowMemberGroup() };
            tmt.ItemsElementName = new ItemsChoiceType72[] { ItemsChoiceType72.Group };
            return tmt;
        }

        private GroupType CreateTablixRowMemberGroup()
        {
            return new GroupType() { Name = "详细信息" };
        }

        /// <summary>
        /// ReportDataSource.Name和RDLC文件的DataSetNamey应保持一致
        /// 对于DataGrid构造的报表，可统一固定用"CustormerDataSet";
        /// DataSetName不需要作为参数传进来
        /// </summary>
        /// <returns>DataSet Name</returns>
        private string CreateDataSetName()
        {
            return String.IsNullOrEmpty(DataSetName) ? "CustomerDataSet" : DataSetName;
        }

        private StyleType CreateTablixStyle()
        {
            StyleType st = new StyleType();
            st.Items = new object[] { CreateTablixBorder() };
            st.ItemsElementName = new ItemsChoiceType4[] { ItemsChoiceType4.Border };
            return st;
        }

        // Tablix的外边框格式
        private BorderType CreateTablixBorder()
        {
            BorderType bt = new BorderType();

            bt.Items = new object[] 
            {
                "Black",
                "Solid",
                "2pt"
            };
            bt.ItemsElementName = new ItemsChoiceType2[] 
            { 
                ItemsChoiceType2.Color,
                ItemsChoiceType2.Style,
                ItemsChoiceType2.Width
            };

            return bt;
        }

        #endregion
    }

第三步：提取DataGrid的数据

1、主要从DataGrid提取每个Column的Width、BindingPath、Header的Content和每个单元格的数据。数据填充DataTable的Rows, BindingPath填充DataTable的Columns，

Header的Content用来作为报表Tablix的标题行。BindingPath，对于DataTemplate和DataGridHyperlinkColumn不知道咋个取提取数据.

2、dataGrid.ScrollIntoView(dataGrid.Items[rowIndex])这个是关键。DataGrid用了一个虚拟啥子来着的（名字不重要，原理简单，计算机领域大量处理性能的都是用这个办法），就是复用界面显示，一个窗口里能装下的几十条RowContainer,每次滚动，人要看到的时候才重新提取新的要显示的数据。

这样提取数万条记录时，界面不会卡，也不会占用很多内存，每次是要显示的时候才取几十条，一点点取。要用，才给，只给需要的那点。

      /// <summary>
        /// DataGrid的转换器,从DataGrid里提取出数据源，以及HeaderName、Binding的Path和ActualWidth
        /// </summary>
        /// <param name="dataGrid">包含数据的DatGrid</param>
        /// <param name="dt">DataGrid数据源转换成的DataTable</param>
        /// <param name="headerNames">DataGridColumn.Header</param>
        /// <param name="bindingPaths"> DataGridBoundColumn.Binding.Path</param>
        public static void DataGridAdapter(this DataGrid dataGrid, DataTable dt, List<string> headerNames, List<string> bindingPaths, List<double> widths)
        {
            // 取出DataGridColumn的Header,BingdingPath,ActualWidth为构造rdlc文件准备数据
            headerNames.Clear();
            bindingPaths.Clear();
            widths.Clear();
            for (int index = 0; index < dataGrid.Columns.Count; index++)
            {
                headerNames.Add(dataGrid.Columns[index].Header as string);
                widths.Add(dataGrid.Columns[index].ActualWidth);
                //string tempBindingPath = ((dataGrid.Columns[index] as DataGridBoundColumn).Binding as Binding).Path.Path;
                string tempBindingPath = GetDataGridColumnBindingPath(dataGrid.Columns[index]);
                bindingPaths.Add(tempBindingPath);

                if (String.IsNullOrEmpty(tempBindingPath) == false)
                    dt.Columns.Add(tempBindingPath, typeof(string));
            }

            for (int rowIndex = 0; rowIndex < dataGrid.Items.Count; rowIndex++)
            {
                // 要显示后，才能取到数据
                DataGridRow rowContainer = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromIndex(rowIndex);
                // 因为Peformance问题，EnableRowVirtualization被设置为true，只加载要显示的数据
                // 重新滚动，然后再重用这些DataGridRow
                if (rowContainer == null)
                {
                    dataGrid.UpdateLayout();
                    dataGrid.ScrollIntoView(dataGrid.Items[rowIndex]);
                    rowContainer = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromIndex(rowIndex);
                }
                if (rowContainer != null)
                {
                    DataGridCellsPresenter presenter = DataGridHelper.GetVisualChild<DataGridCellsPresenter>(rowContainer);
                    if (presenter != null)
                    {
                        DataRow dr = dt.NewRow();
                        bool isLastRowAllEmpty = true;
                        for (int columnIndex = 0; columnIndex < bindingPaths.Count; columnIndex++)
                        {
                            DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex);                           
                            if (cell != null)
                            {
                                if (cell.Content is TextBlock)
                                {
                                    //TODO: DataGridHyperlinkColumn取不到数据
                                    dr[bindingPaths[columnIndex]] = (cell.Content as TextBlock).Text;
                                    if (!String.IsNullOrEmpty((cell.Content as TextBlock).Text)) isLastRowAllEmpty = false;
                                }
                                else if (cell.Content is CheckBox)
                                {
                                    string value = ((cell.Content as CheckBox).IsChecked == true) ? "是" : "否";
                                    dr[bindingPaths[columnIndex]] = value;
                                }
                                else if (cell.Content is ComboBox)
                                {
                                    dr[bindingPaths[columnIndex]] = (cell.Content as ComboBox).Text;
                                    if (!String.IsNullOrEmpty((cell.Content as ComboBox).Text)) isLastRowAllEmpty = false;
                                }
                            }
                        }

                        if (dataGrid.CanUserAddRows && (rowIndex == dataGrid.Items.Count - 1))
                        {
                            // 如果CanUserAddRows被设置为true，只有最后一行的数据都不为空（CheckBox不算作内）,才把数据添加到DataTable
                            if (isLastRowAllEmpty)
                            {
                                continue;
                            }
                        }
                        dt.Rows.Add(dr);
                    }
                }
            }
        }

第四步：填充数据

关键在设置ReportViewer类的LocalReport.ReportPath 和LocalReport.DataSources这两项。

        /// <summary>
        ///  报表数据源发生变化时，及时更新显示报表控件的数据源
        /// </summary>
        /// <param name="reportDataModel">报表数据模型基类</param>
        public void ResetReportData(ReportDataModel reportDataModel)
        {
            if (reportDataModel != null)
            {
                reportViewer.Reset();
                reportViewer.LocalReport.DataSources.Clear();
                reportViewer.Clear();

                if (!reportDataModel.IsDataGrid)
                    reportViewer.LocalReport.ReportPath = reportDataModel.RDLCReportPath;
                else
                {
                    // 如果是DataGrid转换成的，直接从内存流里加载数据
                    if (reportDataModel.MsDataGrid != null)
                    {
                        reportViewer.LocalReport.LoadReportDefinition(reportDataModel.MsDataGrid);
                        // 用完就释放掉，流所占用的所有资源
                       // reportDataModel.MsDataGrid.Dispose();
                    }
                }
                reportViewer.LocalReport.DataSources.Add(reportDataModel.ReportDataSource);
                reportViewer.RefreshReport();
            }
        }

第五步：提供一个ReportHelper类

具体拼接数据以及计算高度等，还有用另一套办法实现第二个功能。

1、根据DataGrid每列的宽度，按百分比，重新设置每列的宽度。

        /// <summary>
        /// 根据DataGrid的Column的Actual Width来设置报表里对应Tablix的TablixColumn的宽度
        /// </summary>
        /// <param name="reportWidth">报表的总宽度</param>
        /// <param name="widths">DataGrid的Column的Actual Width</param>
        /// <param name="tablixColumnWidths">重新按百分比计算的TablixColumn的宽度列表</param>
        public static void CalcTablixColumnWidth(string reportWidth, List<double> widths, out List<string> tablixColumnWidths)
        {
            double totalWidth = 0.0;
            double originalTotalWidth = 0.0;
            List<double> rateColumnWidth = new List<double>();
            string unit = reportWidth.Substring(reportWidth.Length - 2, 2);

            // 取到报表宽度字符串除去单位in或者cm的数值
            Double.TryParse(reportWidth.Substring(0, reportWidth.Length - 2), out totalWidth);


            for (int index = 0; index < widths.Count; index++)
                originalTotalWidth += widths[index];


            for (int index = 0; index < widths.Count; index++)
                rateColumnWidth.Add(widths[index] / originalTotalWidth);

            tablixColumnWidths = new List<string>();
            tablixColumnWidths.Clear();
            for (int index = 0; index < widths.Count; index++)
                tablixColumnWidths.Add((rateColumnWidth[index] * totalWidth).ToString() + unit);
        }

2、把内存中的流读出来，生成对应的RDLC文件，我那里没调用。所以设置LocalReport.ReportPath换成reportViewer.LocalReport.LoadReportDefinition(reportDataModel.MsDataGrid);

        /// <summary>
        /// 把内存的流生成为rdlc文件
        /// </summary>
        /// <param name="rdlc">按rdlc格式构造成功的内存流</param>
        public static void DumpRdlc(MemoryStream rdlc)
        {
            string tempRdlcPath = AppDomain.CurrentDomain.BaseDirectory + @"../../../CommonReport/Templates/GeneratedDataGrid.rdlc";
            if (File.Exists(tempRdlcPath))
                File.Delete(tempRdlcPath);

            using (FileStream fs = new FileStream(tempRdlcPath, FileMode.Create))
            {
                rdlc.WriteTo(fs);
            }
        }

3、部分调用的代码——给一个简单的RDLC模板，以提供表头的字体格式和表内部数据等样式相关的信息，然后再用DataGrid里提取的数据，填充到报表里

        /// <summary>
        /// 将DataGrid的数据抽取出来，转换成rdlc报表，以实现对提供DataGrid的打印、预览、分页和页面布局等功能的支持
        /// 但需要提供一个rdlc报表的模板，必须包括页眉页脚，至少一列数据和标题，以便拿到数据的表头的
        /// style和数据项的style，这一列数据项必须是第一项（且第一项的表头和数据都完整提供了style）
        /// </summary>
        /// <param name="dataGrid">提供数据的DataGrid</param>
        /// <param name="reportViewer">要加载DataGrid数据的ReportViewer</param>
        /// <param name="rdlcModelFileName">rdlc模板的完整路径</param>
        /// <param name="headline">报表标题</param>
        public static void Print(this DataGrid dataGrid, CommonReport.Views.ReportViewer reportViewer, string rdlcModelFileName, string headline)
        {
            if (!File.Exists(rdlcModelFileName)) return;

            // 从DataGrid对应的rdlc模板里读出报表数据来
            Report report = null;
            string dataSourceName = DatasetName;
            dataGrid.UnderRdlcGenProc(reportViewer, headline, gen =>
            {
                report = gen.Read(rdlcModelFileName);

                // ReportDataSource的Name应该用取DataSet的Name
                #region 取DataSourceName

                DataGridHelper.ResetRdlcHeadline(report, headline);
                for (int index = 0; index < report.Items.Length; index++)
                {
                    if (report.Items[index] is DataSetsType)
                    {
                        DataSetsType dataSets = report.Items[index] as DataSetsType;
                        dataSourceName = dataSets.DataSet[0].Name;
                        break;
                    }
                }

                #endregion
            }, (gen, ms, dt) =>
            {
                // 根据从DataGrid里提取的数据重新构造rdlc文件
                RdlcReportAdapter(report, gen.HeaderNames, gen.FieldNames, gen.Widths);
                gen.Write(ms, report);
                return new Microsoft.Reporting.WinForms.ReportDataSource(dataSourceName) { Value = dt };
            });
        }

4、打印的关于页面的一些默认设置（看情况）

            // 设置默认打印布局模式为“显示物理页”
            reportViewer.SetDisplayMode(DisplayMode.PrintLayout);
            reportViewer.ZoomMode = ZoomMode.Percent;
            reportViewer.ZoomPercent = 100;

5、TreeView反射那块——功能三

        /// <summary>
        /// TreeView上选择的项发生变化时，根据所选TreeViewItem的Header信息和Tag里所存储的信息，利用反射构造对应报表的数据类实例
        /// 加载报表模板，调用委托将数据传到报表的显示控件上
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void RdlcTree_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
        {
            if ((sender != null) && (sender is TreeView))
            {
                if ((sender as TreeView).SelectedItem is TreeViewItem)
                {
                    TreeViewItem tempItem = (sender as TreeView).SelectedItem as TreeViewItem;
                    if (tempItem.Tag is TreeViewItemDataType)
                    {
                        TreeViewItemDataType tempTreeViewDataType = tempItem.Tag as TreeViewItemDataType;
                        // 报表类型
                        if (tempTreeViewDataType.UserControlType == TreeViewItemDataType.ControlType.Report)
                        {
                            string reportDataModelInstanceName = tempItem.Header + "Model";
                            Type type = typeof(ReportDataModel);
                            Assembly assembly = type.Assembly;
                            try
                            {
                                ReportDataModel reportDataModelInstance = (ReportDataModel)assembly.CreateInstance(type.Namespace + "." + reportDataModelInstanceName);
                                if (reportDataModelInstance != null)
                                {
                                    reportDataModelInstance.RDLCReportPath = (tempItem.Tag as TreeViewItemDataType).FullPath;
                                    reportDataModelInstance.InitDataSource();
                                    if (Viewer != null) 
                                        Viewer.ResetReportData(reportDataModelInstance);
                                }
                            }
                            catch (Exception ex)
                            {
                                MessageBox.Show(ex.Message);
                            }
                        }

                        // DataGrid 类型
                        else if (tempTreeViewDataType.UserControlType == TreeViewItemDataType.ControlType.DataGrid)
                        {
                            Type type = this.GetType();
                            Assembly assembly = type.Assembly;
                            try
                            {
                                UserControl dataGridUserControlInstance = (UserControl)assembly.CreateInstance(type.Namespace + ".DataGrid." + tempItem.Header);
                            }
                            catch (Exception ex)
                            {
                                MessageBox.Show(ex.Message);
                            }
                        }
                    }
                }
            }
        }

6、通过VisualTreeHelper找到指定类型的子或者父的方法，可在WPF里通用

        /// <summary>
        /// 找出子Visual的特定类型的Parent
        /// </summary>
        /// <typeparam name="T">指定类型</typeparam>
        /// <param name="child">继承自Visual的基本控件类型的子Visual</param>
        /// <returns></returns>
        public static T GetParent<T>(Visual child) where T : Visual
        {
            T parent = default(T);
            Visual visual = VisualTreeHelper.GetParent(child) as Visual;
            parent = visual as T;
            if (parent == null)
                return GetParent<T>(visual);
            else
                return parent;
        }

        /// <summary>
        /// 遍历取父控件的子Viusal,取到指定类型的子Viusal
        /// </summary>
        /// <typeparam name="T">T是Visual或其子类（基本上WPF的控件都是Visual的子类)，指定子类型</typeparam>
        /// <param name="parent">父控件</param>
        /// <returns>子Viusal</returns>
        public static T GetVisualChild<T>(Visual parent) where T : Visual
        {
            T child = default(T);
            int numVisuals = VisualTreeHelper.GetChildrenCount(parent);

            for (int i = 0; i < numVisuals; i++)
            {
                Visual visual = (Visual)VisualTreeHelper.GetChild(parent, i);
                child = visual as T;
                if (child == null)
                    child = GetVisualChild<T>(visual);
                else
                    break;
            }
            return child;
        }

7、提供一个数据深拷贝的通用方法（C#类以及除基类型之外，好多都是传引用，这个是地址，值拷贝不好搞，这个方法直接拷贝流，但是必须类的每个字段都支持序列化）

        /// <summary>
        /// 对引用类型的数据——“所有字段都加了Serializable特性，以支持序列化”
        /// 利用序列化和反序列化实现深度拷贝，即拷贝了堆上的数据，搞了个堆的副本
        /// 而不是浅拷贝那样，只是拷贝了一个指向数据堆的内存地址
        /// 非常实用的小函数，支持所有引用类型数据
        /// </summary>
        /// <param name="original">要拷贝的引用类型数据源</param>
        /// <returns>源数据的副本</returns>
        public static object DeepColne(Object original)
        {
            // 构造一个临时的内存流
            using (MemoryStream ms = new MemoryStream())
            {
                // 调用BinaryFormatter来完成复杂的序列化和反序列化工作
                BinaryFormatter formatter = new BinaryFormatter();

                // StreamingContext—描述给定的序列化流的源和目标，并提供一个由调用方定义的附加上下文
                formatter.Context = new StreamingContext(StreamingContextStates.Clone);

                // 把对象图序列化到内存流，original的每个字段必须标记为可序列化，否则会出错
                formatter.Serialize(ms, original);

                // 反序列化之前需要设置流的当前位置为最开始的位置
                ms.Position = 0;

                // 把内存流反序列化为对象图，再以基类的形式返回给调用者
                return formatter.Deserialize(ms);
            }
        }

六、运行效果

1、含有DataGrid或者其它控件的界面

2、点击打印后，报表生成

附：

1、ReportItems!具体RDLC报表上控件的名称.Value这个取到报表设计器里任意项的数据，然后就可在表达式里进行各种逻辑运算。例如：

= ReportItems!forestryMaintenance.Value + ReportItems!pension.Value + ReportItems!SumPolicy.Value
+ ReportItems!livingExpenses.Value + ReportItems!resettlement.Value

2、合并单元格，纵向和横向的

这个要分组，具体请搜索网上资源

3、控制每页都显示

对于标题，设置KeepWith属性和Tablix一起出现就好；还有一个办法，是设置其它的属性，暂时忘了，网上有

4、XML很重要，据目前所知，微软的工程文件、WPF、打印、报表、XPS、Office2007以后版本等，XML都是基石。（未完，待续）

5、页面纸张尺寸（PageSetting里的一些关于大小的值，单位都是1/100 inch;页面设置布局排版打印有点麻烦，稍不注意就多出去一点，字体、页眉、页脚、边框、页边距等)，如下图:

 6、border style

末了，必须感谢和致敬蜡人张前辈：

http://waxdoll.cnblogs.com/archive/2006/02/25/337713.html

2.微软GotReportViewer官方的案例：

http://www.gotreportviewer.com/（约有20来个，很详细。有时候会上不了）