protected void gv_viewRequest_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            int connId = Convert.ToInt32(gv_viewRequest.DataKeys[e.RowIndex].Values[0]);

            ConnectionBLL.ModifyConnectionRejected(connId);
            ConnectionBLL.DeleteConnectionById(connId);

            Response.Redirect("~/Pages/User/Connections.aspx");
        }