testbox在gridview的特定行中进行验证

问题描述

我有一个带有模板列的网格视图，并且在ItemTemplate中我使用sqldatasource绑定了文本框，我想让第3行中的这个文本框只输入数字，而在其他行上正常输入任何东西？

解决方案

• 在EditingControlShowing中，检查当前单元格是否位于所需的列中。 $ b
• 在EditingControlShowing中注册KeyPress的新事件（如果上述条件为真）。
  
• 删除以前在EditingControlShowing中添加的任何KeyPress事件。
  

• 在KeyPress事件中，检查如果key不是数字，则取消输入。
  
  

    private void dataGridView1_EditingControlShowing（object发件人，DataGridViewEditingControlShowingEventArgs e）
   {
   e.Control.KeyPress  -  = new KeyPressEventHandler（Column1_KeyPress）; 
   if（dataGridView1.CurrentCell.ColumnIndex == 0）// Desired Column 
   {
   TextBox tb = e.Control as TextBox; 
   if（tb！= null）
   {
   tb.KeyPress + = new KeyPressEventHandler（Column1_KeyPress）; 
   
   
   
   $ b $ private void Column1_KeyPress（object sender，KeyPressEventArgs e）
   {
   if（！char.IsControl（e .KeyChar）&&！char.IsDigit（e.KeyChar））
   {
   e.Handled = true; 
   
   
   code $ 
   
   $ b $ p 
    Code Coutesy   -   
   
  I have a grid view with template columns and in the ItemTemplate i have textbox bounded with sqldatasource, I want make this text box in Row 3 only to type only number and on the other Rows to type normaly any thing ?
   解决方案 
  
  In EditingControlShowing, check that if the current cell lies in the desired column.
  Register a new event of KeyPress in EditingControlShowing(if above condition is true).
  Remove any KeyPress event added previously in EditingControlShowing.
  In KeyPress event, check that if key is not digit then cancel the input.
   private void dataGridView1_EditingControlShowing(object sender,     DataGridViewEditingControlShowingEventArgs e)
  {
  e.Control.KeyPress -= new KeyPressEventHandler(Column1_KeyPress);
  if (dataGridView1.CurrentCell.ColumnIndex == 0) //Desired Column
  {
  TextBox tb = e.Control as TextBox;
  if (tb != null)
  {
      tb.KeyPress += new KeyPressEventHandler(Column1_KeyPress);
  }
  }
  }
  
  private void Column1_KeyPress(object sender, KeyPressEventArgs e)
  {
  if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar))
  {
  e.Handled = true;
  }
  }
  Code Coutesy-Make a specific column only accept numeric value in datagridview in Keypress event
                          
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