//--> DataGrid 扩展方法 public static void Export(this DataGrid dg) { ExportDataGrid(dg); } public static void ExportDataGrid(DataGrid dGrid) { SaveFileDialog objSFD = new SaveFileDialog() { DefaultExt = "csv", Filter = "CSV Files (*.csv)|*.csv|Excel XML (*.xml)|*.xml|All files (*.*)|*.*", FilterIndex = 1 }; if (objSFD.ShowDialog() == true) { string strFormat = objSFD.SafeFileName.Substring(objSFD.SafeFileName.IndexOf('.') + 1).ToUpper(); StringBuilder strBuilder = new StringBuilder(); if (dGrid.ItemsSource == null) { return; } List<string> lstFields = new List<string>(); if (dGrid.HeadersVisibility == DataGridHeadersVisibility.Column || dGrid.HeadersVisibility == DataGridHeadersVisibility.All) { foreach (DataGridColumn dgcol in dGrid.Columns) lstFields.Add(FormatField(dgcol.Header.ToString(), strFormat)); BuildStringOfRow(strBuilder, lstFields, strFormat); } foreach (object data in dGrid.ItemsSource) { lstFields.Clear(); foreach (DataGridColumn col in dGrid.Columns) { string strValue = ""; Binding objBinding = null; if (col is DataGridBoundColumn) { objBinding = (col as DataGridBoundColumn).Binding; } if (col is DataGridTemplateColumn) { //This is a template column... // let us see the underlying dependency object DependencyObject objDO = (col as DataGridTemplateColumn).CellTemplate.LoadContent(); FrameworkElement oFE = (FrameworkElement)objDO; FieldInfo oFI = oFE.GetType().GetField("TextProperty"); if (oFI != null) { if (oFI.GetValue(null) != null) { if (oFE.GetBindingExpression((DependencyProperty)oFI.GetValue(null)) != null) { objBinding = oFE.GetBindingExpression((DependencyProperty)oFI.GetValue(null)).ParentBinding; } } } } if (objBinding != null) { if (objBinding.Path.Path != "") { PropertyInfo pi = data.GetType().GetProperty(objBinding.Path.Path); if (pi != null) { strValue = pi.GetValue(data, null).ToString(); } } if (objBinding.Converter != null) { if (strValue != "") { strValue = objBinding.Converter.Convert(strValue, typeof(string), objBinding.ConverterParameter,objBinding.ConverterCulture).ToString(); } else { strValue = objBinding.Converter.Convert(data, typeof(string), objBinding.ConverterParameter, objBinding.ConverterCulture).ToString(); } } } lstFields.Add(FormatField(strValue,strFormat)); } BuildStringOfRow(strBuilder, lstFields, strFormat); } StreamWriter sw = new StreamWriter(objSFD.OpenFile()); if (strFormat == "XML") { //Let us write the headers for the Excel XML sw.WriteLine("<?xml version=\"1.0\" " + "encoding=\"utf-8\"?>"); sw.WriteLine("<?mso-application progid" + "=\"Excel.Sheet\"?>"); sw.WriteLine("<Workbook xmlns=\"urn:" + "schemas-microsoft-com:office:spreadsheet\">"); sw.WriteLine("<DocumentProperties " + "xmlns=\"urn:schemas-microsoft-com:" + "office:office\">"); sw.WriteLine("<Author>Arasu Elango</Author>"); sw.WriteLine("<Created>" + DateTime.Now.ToLocalTime().ToLongDateString() + "</Created>"); sw.WriteLine("<LastSaved>" + DateTime.Now.ToLocalTime().ToLongDateString() + "</LastSaved>"); sw.WriteLine("<Company>Atom8 IT Solutions (P) " + "Ltd.,</Company>"); sw.WriteLine("<Version>12.00</Version>"); sw.WriteLine("</DocumentProperties>"); sw.WriteLine("<Worksheet ss:Name=\"Silverlight Export\" " + "xmlns:ss=\"urn:schemas-microsoft-com:office:spreadsheet\">"); sw.WriteLine("<Table>"); } sw.Write(strBuilder.ToString()); if (strFormat == "XML") { sw.WriteLine("</Table>"); sw.WriteLine("</Worksheet>"); sw.WriteLine("</Workbook>"); } sw.Close(); } } static void BuildStringOfRow(StringBuilder strBuilder, List<string> lstFields, string strFormat) { switch (strFormat) { case "XML": strBuilder.AppendLine("<Row>"); strBuilder.AppendLine(String.Join("\r\n", lstFields.ToArray())); strBuilder.AppendLine("</Row>"); break; case "CSV": strBuilder.AppendLine(String.Join(",", lstFields.ToArray())); break; } } static string FormatField(string data, string format) { switch (format) { case "XML": return String.Format("<Cell><Data ss:Type=\"String" + "\">{0}</Data></Cell>", data); case "CSV": return String.Format("\"{0}\"", data.Replace("\"", "\"\"\"").Replace("\n", "").Replace("\r", "")); } return data; }