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 
     
        }