fetching a value from gridview and displaying it to other gridview

<asp:GridView
        id="GridView1"
        DataKeyNames="Id"
        DataSourceID="srcGridView1"
        AutoGenerateSelectButton="true"
        SelectedRowStyle-CssClass="selectedRow"
        Runat="server" />

    <asp:GridView
        id="GridView2"
        DataSourceID="srcGridView2"
        Runat="server" />

    <asp:SqlDataSource
        id="srcGridView1"
        ConnectionString="<%$ ConnectionStrings:str1 %>"
        SelectCommand="SELECT Id, Name FROM UrTable1"
        Runat="server" />

    <asp:SqlDataSource
        id="srcGridView2"
        ConnectionString="<%$ ConnectionStrings:str1 %>"
        SelectCommand="SELECT FieldName1,FieldName2 FROM UrTable2
            WHERE Id=@GridView1Id"
        Runat="server">
        <SelectParameters>
        <asp:ControlParameter
            Name="GridView1Id"
            ControlID="GridView1"
            PropertyName="SelectedValue" />
        </SelectParameters>
    </asp:SqlDataSource>