SORTING GRIDVIEW CONTROL ASP.NET

1. protected void grdVw_FileList_Sorting(object sender, GridViewSortEventArgs e)
2. {
4. GridSorting(e.SortExpression, grdVw_FileList);
6. }
8. private void GridSorting(string column, GridView grid)
9. {
10. // Session["column"] = ""; clear this after ever search/load
11. string column_ASC = column + " ASC";
12. string column_DESC = column + " DESC";
14. DataTable dt = (DataTable)Session["fileList"];
16. if (Session["column"].ToString().ToUpper() == column_ASC.ToUpper())
17. {
18. DataView dv = new DataView(dt, "", column_DESC, DataViewRowState.CurrentRows);
19. grid.DataSource = dv;
20. grid.DataBind();
21. Session["column"] = column_DESC;
22. }
23. else
24. {
25. DataView dv = new DataView(dt, "", column_ASC, DataViewRowState.CurrentRows);
26. grid.DataSource = dv;
27. grid.DataBind();
28. Session["column"] = column_ASC;
29. }
31. }