protected void Button1_Click(object sender, EventArgs e)
    {
        if (DropDownList2.SelectedIndex >= 0 && DropDownList1.SelectedIndex >= 0)
        {

                lstOfTables = (List<localhost.Table>)ViewState["foreignkey"];
                localhost.Table tableObj = lstOfTables[DropDownList2.SelectedIndex];
                int index = DropDownList1.SelectedIndex;
                localhost.Field selectedField = FieldList[index];
                localhost.Service serviceObj = new localhost.Service();
                int orgID = (int)Session["orgID"];
                int ObjID = (int)Session["objID"];
                bool success = serviceObj.InsertRelationship(orgID, ObjID, tableObj.ObjIDProperty, selectedField.FieldIDProperty);
                if (success)
                    Label3.Visible = true;
                else
                    Label4.Visible = true;

        }
    }