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How to prevent firing CheckedChanged event when checking a control programmatically?

How do I prevent firing CheckedChanged event when checking a control programmatically?

I usually do this the following way.

private bool isFrozen = false;  private void btn1_CheckedChanged(object sender, EventArgs e) {     if (isFrozen)          return;      isFrozen = true;     btn2.Checked = false;     isFrozen = false;      // Do some stuff }  private void btn2_CheckedChanged(object sender, EventArgs e) {     if (isFrozen)          return;      isFrozen = true;     btn1.Checked = false;     isFrozen = false;      // Do another stuff } 

Is there a better or more common solution?

like image 453
Zenya Avatar asked Nov 11 '11 02:11

Zenya


1 Answers

I think your way is fine.

The other way to do it is remove the EventHandler before the check, and then add it back again after the check. This way eliminates the need for the isFrozen variable.

private void btn1_CheckedChanged(object sender, EventArgs e) {   btn2.CheckedChanged -= btn2_CheckedChanged;   btn2.Checked = false;   btn2.CheckedChanged += btn2_CheckedChanged;      // Do some staff }  private void btn2_CheckedChanged(object sender, EventArgs e) {   btn1.CheckedChanged -= btn1_CheckedChanged;   btn1.Checked = false;   btn1.CheckedChanged += btn1_CheckedChanged;      // Do another staff } 
like image 119
LarsTech Avatar answered Sep 27 '22 21:09

LarsTech