private void LoadGrid() { string userid = Request.QueryString["val1"]; BLItem objBL = new BLItem(); // declare and initialize BLItem object int temp = objBL.check_student_username(userid); if (temp == 1) { string image = objBL.get_image(userid); if (image.Length <= 0) { image = "uploadedimages/default.png"; } // Image1.ImageUrl = image; DataTable dt = objBL.GetStudent(userid, 1); grdContact.DataSource = dt; grdContact.DataBind(); } else { ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "alertMessage", "alert('Student Does Not Exist.')", true); //Response.Redirect("View_Student.aspx"); } }