RadioButton.CheckedChanged 事件

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

当 Checked 属性的值更改时发生。

public:
 event EventHandler ^ CheckedChanged;

public event EventHandler CheckedChanged;

public event EventHandler? CheckedChanged;

member this.CheckedChanged : EventHandler 

Public Custom Event CheckedChanged As EventHandler 

事件类型

EventHandler

示例

下面的代码示例演示如何 CheckAlign 在运行时更改属性。 值更改时Checked，文本的RadioButton复选框部分将移动到文本的右侧或左侧。 此示例要求 RadioButton 在窗体上实例化控件，并且已包含对命名空间的 System.Drawing 引用。

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

注解

有关处理事件的详细信息，请参阅 “处理和引发事件”。

另请参阅

• Checked
• OnCheckedChanged(EventArgs)