If CheckedChanged handler isnt working, you can try these 3 things:
1). Create your own bool method like, isChecked(checkBox1):
Code:
public bool isChecked(CheckBox checkbox){
if (checkbox.CheckState == CheckState.Checked) return true;
else return false;
}
Example:
if (isChecked(checkBox1)) {
MessageBox.Show("Checked");
} else {
MessageBox.Show("Not Checked");
}
2). Try using CheckStateChanged Handler.
3). Clean build the project.
I recommend the first one :) .