Hi all,
        I am creating a web application on web matrix.I have a
datagrid.I have the following code :
DataTable dt=(DataTable)Session["DataGrid"];

       DataRow dr = dt.NewRow();

       DataView dv;
First it was giving correct result.After that I run the same code then
it is giving the following error message :

Exception Details: System.NullReferenceException: Object reference not
set to an instance of an object.

for the line  DataRow dr = dt.NewRow();

what can be the problem??
Any ideas???