wpf 导出Excel

 private void Button_Click_1(object sender, RoutedEventArgs e)
 {

 ExportDataGridSaveAs(true, this.data);
 }
 #region wpf客户端 导出DataGrid数据到Excel

 /// <summary>
 /// CSV格式化
 /// </summary>
 /// <param name="data">数据</param>
 /// <returns>格式化数据</returns>
 private static string FormatCsvField(string data)
 {
 return String.Format("\"{0}\"", data.Replace("\"", "\"\"\"").Replace("\n", "").Replace("\r", ""));
 }

 /// <summary>
 /// 导出DataGrid数据到Excel
 /// </summary>
 /// <param name="withHeaders">是否需要表头</param>
 /// <param name="grid">DataGrid</param>
 /// <param name="dataBind"></param>
 /// <returns>Excel内容字符串</returns>
 public static string ExportDataGrid(bool withHeaders, System.Windows.Controls.DataGrid grid, bool dataBind)
 {
 try
 {
 var strBuilder = new System.Text.StringBuilder();
 var source = (grid.ItemsSource as System.Collections.IList);
 if (source == null) return "";
 var headers = new List<string>();
 List<string> bt = new List<string>();

 foreach (var hr in grid.Columns)
 {
 // DataGridTextColumn textcol = hr. as DataGridTextColumn;
 headers.Add(hr.Header.ToString());
 if (hr is DataGridTextColumn)//列绑定数据
 {
 DataGridTextColumn textcol = hr as DataGridTextColumn;
 if (textcol != null)
 bt.Add((textcol.Binding as Binding).Path.Path.ToString()); //获取绑定源

 }
 else if (hr is DataGridTemplateColumn)
 {
 if (hr.Header.Equals("操作"))
 bt.Add("Id");
 }
 else
 {

 }
 }
 strBuilder.Append(String.Join(",", headers.ToArray())).Append("\r\n");
 foreach (var data in source)
 {
 var csvRow = new List<string>();
 foreach (var ab in bt)
 {
 string s = ReflectionUtil.GetProperty(data, ab).ToString();
 if (s != null)
 {
 csvRow.Add(FormatCsvField(s));
 }
 else
 {
 csvRow.Add("\t");
 }
 }
 strBuilder.Append(String.Join(",", csvRow.ToArray())).Append("\r\n");
 // strBuilder.Append(String.Join(",", csvRow.ToArray())).Append("\t");
 }
 return strBuilder.ToString();
 }
 catch (Exception ex)
 {
 // LogHelper.Error(ex);
 return "";
 }
 }
 public class ReflectionUtil
 {
 public static object GetProperty(object obj, string propertyName)
 {
 PropertyInfo info = obj.GetType().GetProperty(propertyName);
 if (info == null && propertyName.Split('.').Count() > )
 {
 object o = ReflectionUtil.GetProperty(obj, propertyName.Split('.')[]);
 int index = propertyName.IndexOf('.');
 string end = propertyName.Substring(index + , propertyName.Length - index - );
 return ReflectionUtil.GetProperty(o, end);
 }
 object result = null;
 try
 {
 result = info.GetValue(obj, null);
 }
 catch (TargetException)
 {
 return "";
 }
 return result == null ? "" : result;
 }
 }
 /// <summary>
 /// 导出DataGrid数据到Excel为CVS文件
 /// 使用utf8编码 中文是乱码 改用Unicode编码
 ///
 /// </summary>
 /// <param name="withHeaders">是否带列头</param>
 /// <param name="grid">DataGrid</param>
 public static void ExportDataGridSaveAs(bool withHeaders, System.Windows.Controls.DataGrid grid)
 {
 try
 {
 string data = ExportDataGrid(true, grid, true);
 var sfd = new Microsoft.Win32.SaveFileDialog
 {
 DefaultExt = "csv",
 Filter = "CSV Files (*.csv)|*.csv|All files (*.*)|*.*",
 FilterIndex =
 };
 if (sfd.ShowDialog() == true)
 {
 using (Stream stream = sfd.OpenFile())
 {
 using (var writer = new StreamWriter(stream, System.Text.Encoding.Unicode))
 {
 data = data.Replace(",", "\t");
 writer.Write(data);
 writer.Close();
 }
 stream.Close();
 }
 }
 MessageBox.Show("导出成功！");
 }
 catch (Exception ex)
 {
 // LogHelper.Error(ex);
 }
 }

 #endregion 导出DataGrid数据到Excel

找了好多都有问题，这个可以分享给到家

转自：https://www.cnblogs.com/kmust/p/4412228.html