RadioButton.CheckedChanged 事件

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

來源:

RadioButton.cs

發生於 Checked 屬性的值變更時。

public:
 event EventHandler ^ CheckedChanged;

public event EventHandler? CheckedChanged;

member this.CheckedChanged : EventHandler 

Public Custom Event CheckedChanged As EventHandler 

事件類型

EventHandler

範例

以下程式碼範例展示了如何在執行時更改該 CheckAlign 屬性。 當值改變Checked時，a RadioButton 的勾選框部分會移至文字的右側或左側。 此範例要求在表單上實例化控制 RadioButton 項，且包含對命名 System.Drawing 空間的參考。

private:
   Void radioButton1_CheckedChanged( System::Object^ sender,
      System::EventArgs^ e )
   {
      // Change the check box position to be opposite its current position.
      if ( radioButton1->CheckAlign == ContentAlignment::MiddleLeft )
      {
         radioButton1->CheckAlign = ContentAlignment::MiddleRight;
      }
      else
      {
         radioButton1->CheckAlign = ContentAlignment::MiddleLeft;
      }
   }

private void radioButton1_CheckedChanged(Object sender, 
                                         EventArgs e)
{
   // Change the check box position to be opposite its current position.
   if (radioButton1.CheckAlign == ContentAlignment.MiddleLeft)
   {
      radioButton1.CheckAlign = ContentAlignment.MiddleRight;
   }
   else
   {
      radioButton1.CheckAlign = ContentAlignment.MiddleLeft;
   }
}

Private Sub radioButton1_CheckedChanged(sender As Object, e As EventArgs)
    ' Change the check box position to be opposite its current position.
    If radioButton1.CheckAlign = ContentAlignment.MiddleLeft Then
        radioButton1.CheckAlign = ContentAlignment.MiddleRight
    Else
        radioButton1.CheckAlign = ContentAlignment.MiddleLeft
    End If
End Sub

備註

如需處理事件的詳細資訊，請參閱 處理和引發事件。

另請參閱

• Checked
• OnCheckedChanged(EventArgs)