Sabba

                    <asp:HiddenField ID="curDistrictID" runat="server" Value="-1" />
                    <asp:GridView ID="gvVendor" runat="server" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False" DataSourceID="odsVendor" Width="100%" PageSize="8" EnableViewState="False" BorderStyle="None" DataKeyNames="vendorID">
                        <Columns>
                            <asp:BoundField DataField="vendorID" HeaderText="vendorID" InsertVisible="False"
                                ReadOnly="True" SortExpression="vendorID" />
                            <asp:BoundField DataField="vendorName" HeaderText="vendorName" SortExpression="vendorName" />
                        </Columns>
                    </asp:GridView>
                    <asp:ObjectDataSource ID="odsVendor" runat="server" TypeName="dsTESTSCORINGTableAdapters.VendorTableAdapter"
                        SelectMethod="GetDataByDistrict" SelectCountMethod="GetRowCountByDistrict"
                        EnablePaging="True" EnableCaching="false" EnableViewState="False" >
                        <SelectParameters>
                            <asp:ControlParameter ControlID="curDistrictID" DefaultValue="-1" Name="DistrictID"
                                PropertyName="Value" Type="Int32" />
                        </SelectParameters>
                    </asp:ObjectDataSource>