Question

I have a table with threads for a forum, the thread name is a link and once clicked it passes the thread_id to the comments page, I need to know how to then display all the comments with the thread_id that is passed?

Have tried:

<asp:SqlDataSource ID="CommentsDataSource" runat="server"
SelectCommand="select * from comments where thread_id=@thread_id" >
<SelectParameters>
    <asp:QueryStringParameter Name="@thread_id" QueryStringField="thread_id" Runat="Server" />
</SelectParameters>
</asp:SqlDataSource>

<asp:GridView ID="GridView1" runat="server">
    <Columns>
        <asp:BoundField DataField="comment" HeaderText="Comment" />
    </Columns>
</asp:GridView>

but it doesn’t work

Thanks

Answer 1

You can use a parameter in your datasource that reads from the QueryString. For example, here is a SqlDataSource which uses thread_id querystring parameter (assuming your link navigates to something like Comments.aspx?thread_id=123:

<asp:SqlDataSource ID="CommentsDataSource" runat="server"
    SelectCommand="select * from comments where thread_id=@thread_id" ...>
    <SelectParameters>
        <asp:QueryStringParameter Name="@thread_id" QueryStringField="thread_id" />
    </SelectParameters>
</asp:SqlDataSource>

<asp:GridView ID="CommentsGrid" runat="server"
    DataSourceID="CommentsDataSource" ...