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RadioButton.CheckedChanged Event

Occurs when the value of the Checked property changes.

[Visual Basic]
Public Event CheckedChanged As EventHandler
[C#]
public event EventHandler CheckedChanged;
[C++]
public: __event EventHandler* CheckedChanged;

[JScript] In JScript, you can handle the events defined by a class, but you cannot define your own.

Event Data

The event handler receives an argument of type EventArgs.

Remarks

For more information about handling events, see Consuming Events.

Example

[Visual Basic, C#, C++] The following example demonstrates how the CheckAlign property can be changed at run time. The check box portion of a radio button control is moved to the right or left of the text when the Checked value changes. This code assumes that a RadioButton control has been instantiated on a form and that a reference to the System.Drawing namespace has been included.

[Visual Basic] 
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


[C#] 
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;
   }
}


[C++] 

private: System::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;
    }
 }
 
};

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also

RadioButton Class | RadioButton Members | System.Windows.Forms Namespace | Checked | OnCheckedChanged

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