hi friend,
you have written the code as..
protected void GVNatureOFWork_SelectedIndexChanged(object sender, EventArgs e)
{
string natureOfWorkID=GVNatureOFWork.SelectedRow.Cells[0].Text;
BindRegionProjectInfoGrid();
}
in this method, jst write
session["value"]=natureOfWorkID;
then u can use
session["value"] anyware in application...