Resizing NamedRange throws a ControlNotFoundException
===

I am programming an Excel 2010 document with Visual Studio (C#). The Problem that I have is: Everytime I want to move/resize a NamedRange it throws a ControlNotFoundException. My question is: Why? I will give an code-Example (from the [msdn help library][1]):

            Microsoft.Office.Tools.Excel.NamedRange NamedRange1 =
                this.Controls.AddNamedRange(this.Range["A1", missing], "NamedRange1");

            NamedRange1.RefersTo = "=Sheet1!$A$1:$B$1";

The RefersTo-Method will throw the Exception. 
If I catch the Exception it moves the range. But when I try to access the rows count I will get the same Exception again.


Is this the right way to resize my NamedRange or is there a better way.

Thanks in Advance!


  [1]: http://msdn.microsoft.com/en-us/library/5xef31zw.aspx "msdn help library"