WPF中自定义只能输入数字的TextBox

KeyDown事件:2011-04-28优化Tab And RightCtrl

  
    

   
      
   
     private
   
      
   
     void
   
      tbCount_KeyDown(
   
     object
   
      sender, KeyEventArgs e)
 {
 TextBox txt 
   
     =
   
      sender 
   
     as
   
      TextBox;

 
   
     //
   
     屏蔽非法按键
   
     

   
      
   
     if
   
      ((e.Key 
   
     >=
   
      Key.NumPad0 
   
     &&
   
      e.Key 
   
     <=
   
      Key.NumPad9) 
   
     ||
   
      e.Key 
   
     ==
   
      Key.Decimal 
   
     ||
   
      e.Key.ToString() 
   
     ==
   
      
   
     "
   
     Tab
   
     "
   
     )
 {
 
   
     if
   
      (txt.Text.Contains(
   
     "
   
     .
   
     "
   
     ) 
   
     &&
   
      e.Key 
   
     ==
   
      Key.Decimal)
 {
 e.Handled 
   
     =
   
      
   
     true
   
     ;
 
   
     return
   
     ;
 }
 e.Handled 
   
     =
   
      
   
     false
   
     ;
 }
 
   
     else
   
      
   
     if
   
      (((e.Key 
   
     >=
   
      Key.D0 
   
     &&
   
      e.Key 
   
     <=
   
      Key.D9) 
   
     ||
   
      e.Key 
   
     ==
   
      Key.OemPeriod) 
   
     &&
   
      e.KeyboardDevice.Modifiers 
   
     !=
   
      ModifierKeys.Shift)
 {
 
   
     if
   
      (txt.Text.Contains(
   
     "
   
     .
   
     "
   
     ) 
   
     &&
   
      e.Key 
   
     ==
   
      Key.OemPeriod)
 {
 e.Handled 
   
     =
   
      
   
     true
   
     ;
 
   
     return
   
     ;
 }
 e.Handled 
   
     =
   
      
   
     false
   
     ;
 }
 
   
     else
   
     
 {
 e.Handled 
   
     =
   
      
   
     true
   
     ;
 
   
     if
   
      (e.Key.ToString() 
   
     !=
   
      
   
     "
   
     RightCtrl
   
     "
   
     )
 {
 MessageBox.Show(
   
     this
   
     .Resources[
   
     "
   
     Txt_InnerPage_ConnPointManage_TabMyConnPoint_AddMyCloudSeeNum_Prompt
   
     "
   
     ].ToString(), 
   
     this
   
     .Resources[
   
     "
   
     Txt_InnerPage_ConnPointManage_TabMyConnPoint_AddMyCloudSeeNum_PromptTitle
   
     "
   
     ].ToString(), MessageBoxButton.OK, MessageBoxImage.Warning);
 }
 }
 }
  
    

TextChanged事件:

 

  
    

   
     private
   
      
   
     void
   
      TextBox_TextChanged(
   
     object
   
      sender, TextChangedEventArgs e)
 {
 
   
     //
   
     屏蔽中文输入和非法字符粘贴输入
   
     

   
      TextBox textBox 
   
     =
   
      sender 
   
     as
   
      TextBox;
 TextChange[] change 
   
     =
   
      
   
     new
   
      TextChange[e.Changes.Count];
 e.Changes.CopyTo(change, 
   
     0
   
     );

 
   
     int
   
      offset 
   
     =
   
      change[
   
     0
   
     ].Offset;
 
   
     if
   
      (change[
   
     0
   
     ].AddedLength 
   
     >
   
      
   
     0
   
     )
 {
 
   
     double
   
      num 
   
     =
   
      
   
     0
   
     ;
 
   
     if
   
      (
   
     !
   
     Double.TryParse(textBox.Text, 
   
     out
   
      num))
 {
 textBox.Text 
   
     =
   
      textBox.Text.Remove(offset, change[
   
     0
   
     ].AddedLength);
 textBox.Select(offset, 
   
     0
   
     );
 }
 }
 }