C# DataGridView 密码列（显示为*号）的设置

DataGridView 密码列（显示为*号）的设置

<转自大豆男生>

代码

 1         /// <summary>
 2         /// 单元格显示格式事件
 3         /// </summary>
 4         /// <param name="sender"></param>
 5         /// <param name="e"></param>
 6          private void dataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
 7         {
 8             // 把第4列显示*号，*号的个数和实际数据的长度相同
 9             if (e.ColumnIndex == 3)
10             {
11                 if (e.Value != null && e.Value.ToString().Length > 0)
12                 {
13                     e.Value = new string('*',e.Value.ToString().Length);
14                 }
15             }
16         }
17 
18         /// <summary>
19         /// 编辑单元格控件事件
20         /// </summary>
21         /// <param name="sender"></param>
22         /// <param name="e"></param>
23         private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
24         {
25             // 编辑第4列时，把第4列显示为*号
26             TextBox t = e.Control as TextBox;
27             if (t != null)
28             {
29                 if (this.dataGridView1.CurrentCell.ColumnIndex == 3)
30                     t.PasswordChar = '*';
31                 else
32                     t.PasswordChar = new char();
33             }
34         }