RadGridView，将GridView中数据导出为需要的格式。

目前项目使用第三方空间Telerik RadControls，在数据导出方面提供便利

　　可以直接使用RadGridView，将GridView中数据导出为需要的格式。

//表格数据导出privatevoid btn_export_Click(object sender, RoutedEventArgs e) {            string extension ="";            ExportFormat format = ExportFormat.Html;            RadComboBoxItem comboItem =this.rcb_format.SelectedItem as RadComboBoxItem;            string selectedItem = comboItem.Content.ToString();            switch (selectedItem)            {                case"Excel": extension ="xls";                    format = ExportFormat.Html;                    break;                case"ExcelML": extension ="xml";                    format = ExportFormat.ExcelML;                    break;                case"Word": extension ="doc";                    format = ExportFormat.Html;                    break;                case"Csv": extension ="csv";                    format = ExportFormat.Csv;                    break;            }            SaveFileDialog dialog =new SaveFileDialog();            dialog.DefaultExt = extension;            dialog.Filter = String.Format("{1} files (*.{0})|*.{0}|All files (*.*)|*.*", extension, selectedItem);            dialog.FilterIndex =1;            if (dialog.ShowDialog())            {                using (Stream stream = dialog.OpenFile())                {                    GridViewExportOptions exportOptions =new GridViewExportOptions();                    exportOptions.Format = format;                    exportOptions.ShowColumnFooters =true;                    exportOptions.ShowColumnHeaders =true;                    exportOptions.ShowGroupFooters =true;                    this.radgridview.Export(stream, exportOptions);                }            } }