DataGrid列表信息保存为EXCEL到指定的路径 ---------继续DataGrid在WPF的数据绑定

一.许多WPF或者Winform程序在保存数据时，会以EXCEL或者文本的形式展现可视化界面的数据，本文就简单介绍下将DataGrid列表信息保存为EXCEL到指定的路径下，例子很简单，用的着的直接用吧。

没有太多的理论性东东，下面直接为大家展现实例。

1.先添加一个按钮用于选择保存路径

   private void button3_Click(object sender, EventArgs e)
        {
            string saveFileName = "";
            SaveFileDialog saveDialog = new SaveFileDialog();
            saveDialog.DefaultExt = "xls";
            saveDialog.Filter = "Excel文件|*.xls";
            saveDialog.FileName = "领用历史记录";
            saveDialog.ShowDialog();
            saveFileName = saveDialog.FileName;
            ExportExcels(saveFileName, dataGridView1);
        }

2.下面时将Datagridview显示的数据转化为EXCEL并保存到路径

    private void ExportExcels(string fileName, DataGridView myDGV)
        {
           
            if (fileName.IndexOf(":") < 0) return; //被点了取消
            Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();
            if (xlApp == null)
            {
                MessageBox.Show("无法创建Excel对象，可能您未安装Excel");
                return;
            }
            Microsoft.Office.Interop.Excel.Workbooks workbooks = xlApp.Workbooks;
            Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
            Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];//取得sheet1
            //写入标题
            for (int i = 0; i < myDGV.ColumnCount; i++)
            {
                worksheet.Cells[1, i + 1] = myDGV.Columns[i].HeaderText;
            }
            //写入数值
            for (int r = 0; r < myDGV.Rows.Count; r++)
            {
                for (int i = 0; i < myDGV.ColumnCount; i++)
                {
                    worksheet.Cells[r + 2, i + 1] = myDGV.Rows[r].Cells[i].Value;
                }
                System.Windows.Forms.Application.DoEvents();
            }
            worksheet.Columns.EntireColumn.AutoFit();//列宽自适应
            if (fileName != "")
            {
                try
                {
                    workbook.Saved = true;
                    workbook.SaveAs(fileName);
                }
                catch (Exception ex)          
                {
                    MessageBox.Show("导出文件时出错,文件可能正被打开！
" + ex.Message);
                }
           }
            xlApp.Quit();
            workbook.Close();
            GC.Collect();//强行销毁
            MessageBox.Show("文件： " + fileName + ".xls 保存成功", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);

        }

3.结果就不给大家显示了，按照EXCEL的流程直接码代码就好了，简单实用

二. 关于WPF中的DataGrid数据绑定问题；

     在之前用的DataGrid过程中，由于自己很少再次操作Datagrid,所以一直都是以作为显示的数据集来处理，为了后需的记忆，现在这里记录下便以后堆代码（吼吼）

      1.首先定义一个数据类，用于绑定DataGrid的各栏位数据，代码如下：

     

 public class BendView: INotifyPropertyChanged
    {public string gongdan{ get; set; }
        public float  jizhongming { get; set; }
        public string liaohao{ get; set; }
        public string yujingleixing{ get; set; }
        public DateTime fasongshijian{ get; set; }
  }

     2.前台XAML代码，就是添加一个DataGrid控件。

 <DataGrid Name="PendingAlarm"  ItemsSource="{Binding}" AutoGenerateColumns="False" CanUserAddRows="False"  Margin="4" Background="Transparent">
                <DataGrid.ColumnHeaderStyle>
                    <Style TargetType="DataGridColumnHeader">
                        <Setter Property="HorizontalContentAlignment"  Value="Center"/>
                    </Style>
                </DataGrid.ColumnHeaderStyle>
                <DataGrid.CellStyle>
                    <Style TargetType="DataGridCell">
                        <Setter Property="HorizontalContentAlignment"  Value="Center"/>
                    </Style>
                </DataGrid.CellStyle>
                <DataGrid.Columns>
                    <DataGridTextColumn Header="工单" Binding="{Binding gongdan}"  Width="*"/>
                    <DataGridTextColumn Header="机种名" Binding="{Binding jizhongming }" Width="*"/>
                    <DataGridTextColumn Header="料号" Binding="{Binding liaohao}"  Width="*" />
                    <DataGridTextColumn Header="预警类型"  Binding="{Binding yujingleixing}" Width="*"/>
                    <DataGridTextColumn Header="发送日期" Binding="{Binding fasongshijian}"  Width="*"/>
                    <DataGridTemplateColumn Header="操作" Width="*">
                        <DataGridTemplateColumn.CellTemplate >
                            <DataTemplate>
                                <Button Content="处理" Click="Deal_BtnClicked"></Button>
                            </DataTemplate>
                        </DataGridTemplateColumn.CellTemplate>
                    </DataGridTemplateColumn>
                </DataGrid.Columns>
            </DataGrid>

  3.向Datagrid添加数据

            ObservableCollection<BendView> peopleList = new ObservableCollection<BendView>();
            peopleList.Clear();
            for (int i = 0; i < DT.Tables[0].Rows.Count; i++)
            {
                peopleList.Add(new BendView()
                {
                    gongdan = DT.Tables[0].Rows[i][0].ToString(),
                    jizhongming = DT.Tables[0].Rows[i][1].ToString(),
                    liaohao = DT.Tables[0].Rows[i][2].ToString(),
                    yujingleixing = DT.Tables[0].Rows[i][3].ToString(),
                    fasongshijian = DT.Tables[0].Rows[i][4].ToString(),
                });
            }
            PendingAlarm.ItemsSource = peopleList;