Question

How can I change my selecommand, and keep it through the remainder of the page (when using pagination, sorting)?

I have a page of checkboxes:

<input type="checkbox" name="checkbox_1" />
<input type="checkbox" name="checkbox_2" />
<input type="checkbox" name="checkbox_3" />
<asp:Button runat="server" Id="CustomButton" text="Create Report" PostBackUrl="report.aspx?"/>

Then on report.aspx I want to generate a standard listview based on the selections in the checkbox.

 <asp:ListView runat="server" ID="ReportListView" DataSourceID="ReportListViewSDS">
  <LayoutTemplate runat="server">
       ...<asp:PlaceHolder runat="server" ID="itemPlaceHolder" />...
  </LayoutTemplate>
 <ItemTemplate>
     ...
 </ItemTemplate>
</asp:ListView>

I want to be able to sort and paginate that listview. This is an idea of what i want in the code behind:

Protected Sub ReportListView_PreRender(ByVal sender As Object, ByVal e As System.EventArgs)

     ' What's the correct way to reference the listview?  
     ' When I use the below code i get "ReportListView is not declared...."

     ' ReportListView.SqlCommand = "SELECT " & checkbox1 & ", " & checkbox2 & " WHERE..."

End Sub

I’m not sure if I’m even going in the right direction with this, any help is appreciated. Will the changes i make to the sql command in the PreRender function hold when I have applied pagination or sorting to the listview?

Answer 1

Actually this was much easier than I thought. Sorry, just a newbie mistake i guess. i ended up simply doing:

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    Dim SqlCommand As String
    ' create the sql command using the Request.Form vars i wanted.
    ' ...
    ' Run the sql command, I can access the listview directly, just like a global variable:
    ReportListView.SelectCommand = SqlCommand
    ReportListView.DataBind()
 End Sub

And that seemed to do it. Actually very easy.