Unable to bind LINQ to gridview

Question

I just using a simple LINQ query having group by clause and trying to bind its result set to GridView. My LINQ query looks like

var expData = from c in WebDB.Tra         


        

Answer 1

EDIT This ignores the "" in your linq statement

Look at the attribute on your asp.net GridView(aspx code): DataKeyField="" is pointing to a column name that does not exist in your linq query