protected void btnExtend_Click(object sender, EventArgs e)
        {
            LibrarianLogic ll = new LibrarianLogic();

            ll.UpdateLoanTableDueDate(int.Parse(txtLoanId.Text), 2);

            DataTable tblExtensionRequests = ll.GetExtensionRequests();

            GridView1.DataSource = tblExtensionRequests;
            GridView1.DataBind();
        }
        protected void btnRequest3_Click(object sender, EventArgs e)
        {
            lblMessage.Text           = "";
            PlaceHolderLoanId.Visible = true;
            btnApprove.Visible        = false;
            btnReject.Visible         = false;
            btnExtension.Visible      = true;
            btnReturned.Visible       = false;

            LibrarianLogic ll = new LibrarianLogic();

            DataTable tblExtensionRequests = ll.GetExtensionRequests();

            if (tblExtensionRequests.Rows.Count == 0)
            {
                lblMessage.Text = "No Extension Requests Pending.";
                return;
            }

            GridView1.DataSource = tblExtensionRequests;
            GridView1.DataBind();
        }