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                            要得到DatePicker的textchange屬性， 必須通過TextBoxBase.TextChanged 事件來處理。?
  

想要判斷是否當前DatePicker的textbox獲取到焦點， 可以通過以下代碼：

  

?privatevoiddtpBirth_TextChanged(objectsender,TextChangedEventArgse)

?????? {

??????????//

??????????IInputElementchild=FocusManager.GetFocusedElement(window);

  

??????????DatePickerdtp=senderasDatePicker;

  

??????????if(null!=child)

?????????? {

??????????????IInputElementelement=dtp.InputHitTest(Mouse.GetPosition(dtp));

??????????????if(null!=element)

?????????????? {

??????????????????dtpBirth.Tag=true;

?????????????? }???????????????

?????????? }

?????? }
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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