Asp.Net中应用Aspose.Cells输出报表到Excel 及样式设置

解决思路：

1、找个可用的Aspose.Cells（有钱还是买个正版吧，谁开发个东西也不容易）；

2、在.Net方案中引用此Cells；

3、写个函数ToExcel(传递一个DataTable)，可以另写个SetCellStyle的函数专门给各列设置样式。

4、在按钮的Click事件中调用此ToExcel()即可。

注：想更详细了解的到Aspose网站去，那里有很多在线文档，够你看的了。也可以下载个Demo程序研究。

部分代码贴在这里，代码还有需要改进的地方，暂时这么用着，给自己以后方便查找，再者给真正接触此控件的同志们抛个砖头：

ExportToExcel()的：

/// <summary>
        /// 利用Aspose.Cells对DataTable数据生成Excel文件
        /// </summary>
        /// <returns>是否成功</returns>
        /// <param name="response">包含存储路径，直接用Response即可</param>
        /// <param name="dt">数据体</param>
        /// <param name="FileName">文件名</param>
        /// <param name="SheetName">sheet名</param>
        /// <param name="Title">表头</param>
        /// <param name="ColTitle">列标题，字符串数组</param>
        /// <param name="ColName">列名，字符串数组</param>
        /// <param name="ColWidth">列宽，整数数组</param>
        /// <param name="ColStyle">列样式，整数数组，1=居中文本、2=特殊字体Georgia、3=居左文本、4=整数(x)、5=2位小数(x,xxx.xx)、6=日期(yyyy-M-d不带时间)、7=百分数(0.123=12.3%)</param>
        /// <param name="ColTitleRow">列标题的开始行号，有title的设为1即可</param>
        /// <param name="err">返回的错误信息</param>
        public bool ExportToExcel(System.Web.HttpResponse response,DataTable dt, string FileName, string SheetName, string Title,
            ArrayList ColTitle, ArrayList ColName, ArrayList ColWidth, ArrayList ColStyle, int ColTitleRow, ref string err)
        {

            //先检查各数组是否个数一致
            if (ColTitle.Count != ColName.Count || ColTitle.Count != ColWidth.Count || ColTitle.Count != ColStyle.Count)
            {
                err = "数据组个数不一致";
                return false;
            }

            try
            {

                Workbook workbook = new Workbook();

                //打开模版文件
                //          string path = System.Web.HttpContext.Current.Server.MapPath("~");
                //          path = path.Substring(0, path.LastIndexOf("//"));
                //          path += @"/designer/Workbooks/NumberFormatting.xls";
                //          workbook.Open(path);

                //打开sheet
                workbook.Worksheets.Clear();
                Worksheet worksheet = workbook.Worksheets.Add(SheetName);
                worksheet = workbook.Worksheets[0];

                Cells cells = worksheet.Cells;
                //cells.ClearContents(0,0,60,30);

                //加入样式
                ArrayList styles = new ArrayList();
                styles = SetCellStyle(workbook, ColStyle);

                //加入Title即表头，类似“xxx汇总表”，其占居所有列数
                Range w;//范围
                if(ColTitleRow>0)
                {
                    //Put数据到某个cell中
                    cells[0,0].PutValue(Title);
                    //设置行高
                    cells.SetRowHeight(0, 35);
                    //合并单元格
                    cells.Merge(0,0,1,(byte)ColName.Count);
                    //CreateRange函数参数说明：cells.CreateRange(firstrow, firstcol, rownumber, colnumber)
                    w=cells.CreateRange(0,0,1,(byte)ColName.Count);
                    //设置该合并单元的Style
                    //w.Style = (Aspose.Cells.Style)styles[ColStyle.Count];
                    w.Style = workbook.Styles["SheetTitle"];
                    }

                //给各列的标题行PutValue，类似“序号，类型，名称，价格，数量，合计”
                int currow = ColTitleRow;
                byte curcol = 0;
                foreach(string s in ColTitle)
                {
                    cells[currow,curcol++].PutValue(s);
                    cells.SetRowHeight(ColTitleRow, 25);
                }
                //设置列标题行的Style
                w=cells.CreateRange(currow,0,1,ColName.Count);
                w.Style = (Aspose.Cells.Style)styles[ColStyle.Count+1];
                //上面这行也可以写成
                //w.Style = workbook.Styles["ColTitle"];//ColTitle在函数SetCellStyle中设置了

                currow++;


                //将数据体按顺序插入各cell
                for(int i=0; i<dt.Rows.Count; i++)
                {
                    curcol = 0;
                    for(int j=0; j<ColName.Count; j++)
                    {
                        object val = dt.Rows[i][ColName[j].ToString()].ToString().Trim();
                        switch (int.Parse(ColStyle[j].ToString()))
                        {
                            case 4://整数
                                if (val.ToString().Length>0)
                                    val = Int32.Parse(val.ToString());
                                else
                                    val = "";
                                break;
                            case 5://2位小数
                                if (val.ToString().Length>0)
                                    val = Decimal.Parse(val.ToString());
                                else
                                    val = "";
                                break;
                            case 6://日期
                                if (val.ToString().Length>0)
                                    val = DateTime.Parse(val.ToString());
                                else
                                    val = "";
                                break;
                            case 7://百分数，1=100%
                                if (val.ToString().Length>0)
                                    val = Decimal.Parse(val.ToString());
                                else
                                    val = "";
                                break;
                            default:
                                break;
                        }//end switch
                        cells[currow,curcol++].PutValue(val);
                    }//end for j
                    currow ++;
                } //end for i
                curcol = 0;
                //设置数据体Style
                for(int i=0; i<dt.Columns.Count; i++)
                {
                    w = cells.CreateRange(ColTitleRow+1, i, dt.Rows.Count, 1);
                    w.Style = (Aspose.Cells.Style)styles[i];
                }
                //w=cells.CreateRange(ColTitleRow+1,col,currow,ColName.Count);
                //w.Style=excel.Styles["Data"];

                //设置各列宽度
                foreach(int s in ColWidth)
                    cells.SetColumnWidth(curcol++, s);

                /*
                //********可参考的格式设置*******************************************************
                //Set number format with built-in index
                for (int i = 0; i < 37; i ++)
                {
                    cells[i, 1].PutValue(1234.5);
                    //int Number = cells[i, 0].IntValue;

                    //Set the display number format
                    cells[i, 1].Style.Number = i;
                }

                //Set number format with custom format string
                for (int i = 1; i < 4; i ++)
                {
                    cells[i, 3].PutValue(1234.5);

                    //Set the display custom number format
                    cells[i, 3].Style.Custom = cells[i, 2].StringValue;
                }
                //********可参考的格式设置*******************************************************
                */

                //workbook.Save(FileName, FileFormatType.Default, SaveType.OpenInExcel, System.Web.HttpContext.Current.Response);
                workbook.Save(FileName, FileFormatType.Default, SaveType.OpenInExcel, response);

                return true;
            }
            catch (Exception ex)
            {
                err = ex.Message;
                return false;
            }
        }//end ExportToExcel()
        #endregion

样式设置SetStyle()的：

#region SetCellStyle()设置格式，如果需要增加新的格式，请在case后面增加，不要修改前面的
public ArrayList SetCellStyle(Workbook workbook, ArrayList styleindex)
{
    //通用设置样式的
    ArrayList CellStyle = new ArrayList(styleindex.Count + 2);
    Aspose.Cells.Style style = null;
    for (int i=0; i<styleindex.Count; i++)
    {
        int index = workbook.Styles.Add();

        style = workbook.Styles[index];
        style.Name = "Custom_Style" + ((int)(i + 1)).ToString();
        style.ForegroundColor = Color.White;
        style.HorizontalAlignment = TextAlignmentType.Center;
        style.VerticalAlignment = TextAlignmentType.Center;
        style.Font.Name = "宋体";
        style.Font.Size = 10;
        style.Borders[BorderType.LeftBorder].LineStyle = CellBorderType.Thin;
        style.Borders[BorderType.RightBorder].LineStyle = CellBorderType.Thin;
        style.Borders[BorderType.TopBorder].LineStyle = CellBorderType.Thin;
        style.Borders[BorderType.BottomBorder].LineStyle = CellBorderType.Thin;

        switch((int)styleindex[i])
        {
            case 1://居中文本
                style.HorizontalAlignment = TextAlignmentType.Center;
                style.VerticalAlignment = TextAlignmentType.Center;
                break;
            case 2://特殊字体Georgia
                style.Font.Name = "Georgia";
                break;
            case 3://文本列
                style.HorizontalAlignment = TextAlignmentType.Left;
                break;
            case 4://整数列 1 Decimal 0
                style.HorizontalAlignment = TextAlignmentType.Center;
                style.Number = 1;
                break;
            case 5://2位小数 39={Currency #,##0.00;-#,##0.00}   40={#,##0.00;[Red]-#,##0.00}
                style.HorizontalAlignment = TextAlignmentType.Right;
                style.Number = 40;
                break;
            case 6://日期列 14 Date yyyy-m-d
                style.HorizontalAlignment = TextAlignmentType.Center;
                style.Number = 14;//这个格式不是太好，还需要调整
                break;
            case 7://百分比% 10 Percentage 0.00%
                style.HorizontalAlignment = TextAlignmentType.Center;
                style.Number = 10;
                break;
            default:
                break;
        }//end switch
        CellStyle.Add(style);
    }

    //特别增加一个用于表头的style.Name = "SheetTitle";
    int sindex = workbook.Styles.Add();
    style = workbook.Styles[sindex];
    style.Name = "SheetTitle";
    style.Font.Size = 14;
    style.Font.IsBold = true;
    style.Font.Name = "楷体_GB2312";
    style.HorizontalAlignment = TextAlignmentType.Center;
    style.VerticalAlignment = TextAlignmentType.Center;
    style.Borders[BorderType.LeftBorder].LineStyle = CellBorderType.Thin;
    style.Borders[BorderType.RightBorder].LineStyle = CellBorderType.Thin;
    style.Borders[BorderType.TopBorder].LineStyle = CellBorderType.Thin;
    style.Borders[BorderType.BottomBorder].LineStyle = CellBorderType.Thin;

    CellStyle.Add(style);

    //特别增加一个用于列标题的style.Name = "ColTitle";
    sindex = workbook.Styles.Add();
    style = workbook.Styles[sindex];
    style.Name = "ColTitle";
    style.Font.Size = 12;
    style.Font.IsBold = true;
    style.Font.Name = "宋体";
    style.HorizontalAlignment = TextAlignmentType.Center;
    style.VerticalAlignment = TextAlignmentType.Center;
    style.Borders[BorderType.LeftBorder].LineStyle = CellBorderType.Thin;
    style.Borders[BorderType.RightBorder].LineStyle = CellBorderType.Thin;
    style.Borders[BorderType.TopBorder].LineStyle = CellBorderType.Thin;
    style.Borders[BorderType.BottomBorder].LineStyle = CellBorderType.Thin;

    CellStyle.Add(style);

    //返回样式数组
    return CellStyle;

}//end SetCellStyle
#endregion