wpf 導出Excel

  1 private void Button_Click_1(object sender, RoutedEventArgs e)
  2 {
  3 
  4 ExportDataGridSaveAs(true, this.data);
  5 }
  6 #region wpf客戶端 導出DataGrid數據到Excel
  7 
  8 /// <summary>
  9 /// CSV格式化
 10 /// </summary>
 11 /// <param name="data">數據</param>
 12 /// <returns>格式化數據</returns>
 13 private static string FormatCsvField(string data)
 14 {
 15 return String.Format("\"{0}\"", data.Replace("\"", "\"\"\"").Replace("\n", "").Replace("\r", ""));
 16 }
 17 
 18  
 19 
 20 /// <summary>
 21 /// 導出DataGrid數據到Excel
 22 /// </summary>
 23 /// <param name="withHeaders">是否需要表頭</param>
 24 /// <param name="grid">DataGrid</param>
 25 /// <param name="dataBind"></param>
 26 /// <returns>Excel內容字元串</returns>
 27 public static string ExportDataGrid(bool withHeaders, System.Windows.Controls.DataGrid grid, bool dataBind)
 28 {
 29 try
 30 {
 31 var strBuilder = new System.Text.StringBuilder();
 32 var source = (grid.ItemsSource as System.Collections.IList);
 33 if (source == null) return "";
 34 var headers = new List<string>();
 35 List<string> bt = new List<string>();
 36 
 37 foreach (var hr in grid.Columns)
 38 {
 39 // DataGridTextColumn textcol = hr. as DataGridTextColumn;
 40 headers.Add(hr.Header.ToString());
 41 if (hr is DataGridTextColumn)//列綁定數據
 42 {
 43 DataGridTextColumn textcol = hr as DataGridTextColumn;
 44 if (textcol != null)
 45 bt.Add((textcol.Binding as Binding).Path.Path.ToString()); //獲取綁定源
 46 
 47 }
 48 else if (hr is DataGridTemplateColumn)
 49 {
 50 if (hr.Header.Equals("操作"))
 51 bt.Add("Id");
 52 }
 53 else
 54 {
 55 
 56 }
 57 }
 58 strBuilder.Append(String.Join(",", headers.ToArray())).Append("\r\n");
 59 foreach (var data in source)
 60 {
 61 var csvRow = new List<string>();
 62 foreach (var ab in bt)
 63 {
 64 string s = ReflectionUtil.GetProperty(data, ab).ToString();
 65 if (s != null)
 66 {
 67 csvRow.Add(FormatCsvField(s));
 68 }
 69 else
 70 {
 71 csvRow.Add("\t");
 72 }
 73 }
 74 strBuilder.Append(String.Join(",", csvRow.ToArray())).Append("\r\n");
 75 // strBuilder.Append(String.Join(",", csvRow.ToArray())).Append("\t");
 76 }
 77 return strBuilder.ToString();
 78 }
 79 catch (Exception ex)
 80 {
 81 // LogHelper.Error(ex);
 82 return "";
 83 }
 84 }
 85 public class ReflectionUtil
 86 {
 87 public static object GetProperty(object obj, string propertyName)
 88 {
 89 PropertyInfo info = obj.GetType().GetProperty(propertyName);
 90 if (info == null && propertyName.Split('.').Count() > 0)
 91 {
 92 object o = ReflectionUtil.GetProperty(obj, propertyName.Split('.')[0]);
 93 int index = propertyName.IndexOf('.');
 94 string end = propertyName.Substring(index + 1, propertyName.Length - index - 1);
 95 return ReflectionUtil.GetProperty(o, end);
 96 }
 97 object result = null;
 98 try
 99 {
100 result = info.GetValue(obj, null);
101 }
102 catch (TargetException)
103 {
104 return "";
105 }
106 return result == null ? "" : result;
107 }
108 }
109 /// <summary>
110 /// 導出DataGrid數據到Excel為CVS文件
111 /// 使用utf8編碼 中文是亂碼 改用Unicode編碼
112 /// 
113 /// </summary>
114 /// <param name="withHeaders">是否帶列頭</param>
115 /// <param name="grid">DataGrid</param>
116 public static void ExportDataGridSaveAs(bool withHeaders, System.Windows.Controls.DataGrid grid)
117 {
118 try
119 {
120 string data = ExportDataGrid(true, grid, true);
121 var sfd = new Microsoft.Win32.SaveFileDialog
122 {
123 DefaultExt = "csv",
124 Filter = "CSV Files (*.csv)|*.csv|All files (*.*)|*.*",
125 FilterIndex = 1
126 };
127 if (sfd.ShowDialog() == true)
128 {
129 using (Stream stream = sfd.OpenFile())
130 {
131 using (var writer = new StreamWriter(stream, System.Text.Encoding.Unicode))
132 {
133 data = data.Replace(",", "\t");
134 writer.Write(data);
135 writer.Close();
136 }
137 stream.Close();
138 }
139 }
140 MessageBox.Show("導出成功！");
141 }
142 catch (Exception ex)
143 {
144 // LogHelper.Error(ex);
145 }
146 }
147 
148 #endregion 導出DataGrid數據到Excel
149 
150  

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