ASP.NET

1        protected void BtnDelete_Click(object sender, EventArgs e)
2        {
3            try
4            {
5                dt = (DataTable)Session["Cart"];
6                CheckBox chkSelected = new CheckBox();
7                foreach (GridViewRow rowItem in GridView1.Rows)
8                {
9                    chkSelected = (CheckBox)rowItem.FindControl("chkSelection");
10                   index = rowItem.RowIndex;
11                   
12                   if (chkSelected.Checked == true)
13                   {   
14                       dt.Rows.RemoveAt(index);
15                       dt.AcceptChanges();
16                   }
17               }
18               GridView1.DataSource = dt;
19               GridView1.DataBind();
20               Session["Cart"] = dt;
21           }
22           catch(Exception ee)
23           {
24               Lblmsg.Text = ee.Message;
25           }
26   
27   
28       }