Problem with LoginView/RoleGroups inside a GridView RSS

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  Celestine

  Member

  301 Points

  82 Posts

  Problem with LoginView/RoleGroups inside a GridView

  Jun 18, 2006 06:38 PM|LINK

  I'm having a problem with a LoginView inside a GridView, and I want to programmatically set the roles for the LoginView's RoleGroups.
  
  I started with a GridView with a LoginView in each row.  For example, the gridview shows a list of products; if you are logged as an Admin, you also see a link to edit each product.
  
  So something like this inside the GridView:
  
  <ItemTemplate>
      <p><%#Eval("ProductName")%></p>
      <asp:LoginView ID=LoginView1 runat=server>
      <RoleGroups>
          <asp:RoleGroup Roles="Admin" >
          <ContentTemplate>
          <asp:HyperLink runat=server ID=lnkEdit
              NavigateUrl='<%# String.Format("~/Admin/ProductEdit.aspx?ID={0}",
                  Eval("ProductID")) %>'
              Text="Edit Product" />
          </ContentTemplate>
          </asp:RoleGroup>
      </RoleGroups>
      </asp:LoginView>
  </ItemTemplate>      
  
  This works just fine, but I don't want to hardcode the name of the role, because I want to put this in a user control to be used with various sites, and the name of the role or roles might vary;  I'd like to specify the name of this role in the web.config. 
  
  So I just removed the Roles="Admin" part from the RoleGroup, so that RoleGroup has no roles defined; then added this in my codebehind:
      Private _Roles() As String = {ConfigurationManager.AppSettings("ProductEditorRole")}
  
  For any LoginView that is NOT inside a GridView, I can just do this in the page load:
          LoginView1.RoleGroups(0).Roles = _Roles
  
  Works fine. For the LoginView inside the GridView, I did this in the GridView's RowDataBound event:
          Dim lv As LoginView
          lv = CType(e.Row.Cells(1).FindControl("LoginView1"), LoginView)
          lv.RoleGroups(0).Roles = _Roles
  
  My problem is that this only partly works.  I do see the Edit Product link when I am logged in as an admin and not otherwise, so that part works.  However, the Eval doesn't happen, so the links NavigateUrl doesn't get set.  And if I try to do a FindControl on lnkEdit, it can't be found, even though I check first to make sure I'm logged in as an Admin, and I can see the link displayed.
  
  Is there a way around this?  I really do not want to hardcode the name of the role!
  
  
  
  
  
  
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  Delinquent

  Member

  393 Points

  145 Posts

  Re: Problem with LoginView/RoleGroups inside a GridView

  Nov 22, 2007 10:28 AM|LINK

  The only way I could work around this is by adding a panel within the gridview like so: -

  <asp:Panel ID="pnlAdmin" runat="server" visible="false">                           
           <asp:LinkButton ID="btnDelete" Text="Delete" CommandName="Delete" OnClientClick="return confirm('Are you sure you wish to delete the store?');" runat="server"/>
  </asp:Panel>

  and then adding a bit of code to the item created event as follows: -

  Protected Sub records_RowCreated(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles records.RowCreated
          If Page.User.Identity.IsAuthenticated Then
              Dim pnlAdmin As Panel = e.Row.FindControl("pnladmin")
              pnlAdmin.visible = true
          End If
  End Sub

  It seems that you need to do use the page.user.isauthenticated or page.user.isInRole(x) and then show / hide the panels as required.

  This actually has a better scope of functionality than the loginView as you don't ahve to replicate panels for each role section and just show / hide what you want.

  Hope that helps :)