status of checkbox inside gridview not changed after checking and not update to sql2005

foreach (GridViewRow rowI
tem in GridView1.Rows)
{
      CheckBox chk = (CheckBox)(rowItem.Cells[7].FindControl("ch1"));
      try
      {
          if (chk == null)
          {
              Label3.Text = "hai";
              SqlConnection myConnection = new SqlConnection("Data Source=PCIMS051;Initial Catalog=unblockingwebsite;Integrated Security=True");
              myConnection.Open();
              SqlCommand myCommand = new SqlCommand("INSERT INTO twebsite_unblocking (Requested_Status) " + "Values ('2')", myConnection);
              myCommand.ExecuteNonQuery();
              myConnection.Close();
          }
      }
      catch { }
      
     }

Update Cancel Requested_ID Requested_by Action_taken Action_remark Action_taken_by Action_taken_date Request_Status


Label text changed but check box status not changed and not update to gridview

Tags: C#, Visual Studio (Visual Studio 2008), SQL Server 2005, ASP.NET, SQL Server