When I step through code and come to the line in the try block

try
{
    chkJobCompleted.Checked = dispatchJob.JobCompleted;
}
catch(Exception ex)
{
     MessageBox.Show(ex.Message);
}

I get a pop up message consistently that says "Object reference not set
to an instance of an object"

Several observations to note:

* the checkbox (chkJobCompleted) is NOT null
* the object dispatchJob is NOT null.
* why doesn't the try block catch it?  Why doesn't it go into the catch
block?  Why do I get a popup message despite the try block?
* after I click okay on the popup message box, the code goes on.

It does not make sense to me.  Thanks for all your help.