CheckedChanged Event
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RadioButton.CheckedChanged Event


Occurs when the value of the Checked property changes.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public event EventHandler CheckedChanged

For more information about handling events, see Handling and Raising Events.

Legacy Code Example

The following code example demonstrates how the CheckAlign property can be changed at run time. The check box portion of a RadioButton is moved to the right or left of the text when the Checked value changes. This example requires that a RadioButton control has been instantiated on a form and that a reference to the System.Drawing namespace has been included.

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;
      radioButton1.CheckAlign = ContentAlignment.MiddleLeft;

.NET Framework
Available since 1.1
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