one more thing ..........how to set the columns size am getting dynamically to Autofit the contents size .........

sorry ..not able to understand it ..........anyways ..this is what i want ........i have taken this code from the documentation ... what i want to know is what to write in the first line ...coz i am getting the column title from the Linq query ...........thanks ...is there anyway to do the above in C#

one more thing......how to write the column name created at runtime in XAML ..for eg in C# we write xdg1.DefaultFieldLayout.Fields[0] ........how to do this in XAML .......