'System.Reflection.TargetInvocationException' occurred in PresentationFramework.dll

Question

Okay, I have a bit of a weird bug...

This works fine:

private void radioButtonNormalPoint_Checked(object sender, RoutedEventArgs e)
{
   //comboBoxNormal         


        

Answer 1

The event is probably raised before the elements are fully loaded or the references are still unset, hence the exceptions. Try only setting properties if the reference is not null and IsLoaded is true.