"Steven Cheng[MSFT]" wrote:

> Hello Morris,
>
> As for the databinding expression in your scenario, you do not need to use
> "Eval" function since it is used for retrieved data field value from
> datasource item only.  You can simply put the boolean expression in
> databinding block directly as below:
>
> ======================
>  <asp:Button ID="btn1" runat="server" Text="Show TextBox1"
>  .............
> Enabled='<%# User.IsInRole("administrator")  %>'/>
>
> ======================
>
> Hope this helps.
>
> Sincerely,
>
> Steven Cheng
>
> Microsoft MSDN Online Support Lead
> 
>
> This posting is provided "AS IS" with no warranties, and confers no rights.
>
>
>
>

"Steven Cheng[MSFT]" wrote:

> Hello Morris,
>
> Thanks for your reply.
>
> I think the problem now is not due to syntax error. The  Visible='<%#
> User.IsInRole("administrator")  %>'/>  like expression should correctly
> return a boolean value. Based on my analysis, what you can check are the
> following two things:
>
> 1. programmatically print out the  User.IsInRole("administrator")  value to
> make sure it return the expected value (use response.write....).
>
> 2. for  <%# User.IsInRole("administrator")  %> expression, it is used for
> databinding(different from <%  %> expression), and it won't be executed
> automatically if you do not perform databinding on the expression's
> container or super container. Therefore, you should make sure you have
> called databind method on the control which contains this expression. e.g.
>
> ================
> <asp:LinkButton ID="LinkButton1" runat="server"
>          Visible='<%# User.IsInRole("admin")
> %>'>LinkButton</asp:LinkButton><br />
>
>
>   protected void Page_Load(object sender, EventArgs e)
>     {
>
>         LinkButton1.DataBind();
>
>     }
> ====================
>
> Hope this helps.
>
> Sincerely,
>
> Steven Cheng
>
> Microsoft MSDN Online Support Lead
>
> 
>
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>
> This posting is provided "AS IS" with no warranties, and confers no rights.
>
>

"Steven Cheng[MSFT]" wrote:

> Thanks for your reply Morris,
>
> Sure, this is very important and would cause the original code in the last
> reply not work. When you put the control in Master Page, they has no direct
> reference member in concrete pages(applied that master page), you need to
> use FindControl to locate the certain control if you want to access it.
>
> Here, you have the following options:
>
> 1. Just put the databinding code in MasterPage's Load event. e.g.
>
> ========
> public partial class masters_simple : System.Web.UI.MasterPage
> {
>     protected void Page_Load(object sender, EventArgs e)
>     {
>         HyperLink1.DataBind();
>     }
> }
> ==============
> However, you need to adjust the master template also since "User" property
> is not directly accessible in MasterPage class. e.g.
>
> ======in master template===========
> <asp:HyperLink ID="HyperLink1" runat="server"
> NavigateUrl="http://www.asp.net"
>                      Visible='<%# Page.User.IsInRole("admin") %>'
>                     >Test Hyperlink</asp:HyperLink>
> ===============
>
> 2. If you want to put the databinding in concrete page code, you need to
> first programmatically reference the control instance and call "DataBind"
> method on it.  e.g.
>
> =====================
> public partial class Part2_contentPage : System.Web.UI.Page
> {
>     protected void Page_Load(object sender, EventArgs e)
>     {
>         Master.FindControl("HyperLink1").DataBind();
>     }
> }
> =====================
>
> Hope this helps.
>
> Sincerely,
>
> Steven Cheng
>
> Microsoft MSDN Online Support Lead
>
>
> This posting is provided "AS IS" with no warranties, and confers no rights.
>
>
>
>
>
>
>

"Steven Cheng[MSFT]" wrote:

> Hi Morris,
>
> Thanks for your followup.
>
> Sure, if your Hyperlink control is nested in other container control(not
> directly on the master page's top level), you can not directly find it
> through MasterPage.Findcontrol...  The code in my last reply just indicate
> that this is a possible approach but won't 100% since your actual master
> page control layout is unknown to me.
>
> I suggest you provide your master page's layout info(at least how your
> hyperlink reside on the page and its container).  Here I just use a test
> master page which use a LoginView to hold the hyperlink and access it from
> concrete page.  Here is the code
>
> ==========master page aspx=============
> ........................
> <asp:LoginView ID="LoginView1" runat="server">
>                         <AnonymousTemplate>
>                             <asp:HyperLink ID="HyperLink2" runat="server"
>                             Visible='<%# Page.User.IsInRole("admin") %>'
> >HyperLink in LoginView</asp:HyperLink>
>                         </AnonymousTemplate>
>                     </asp:LoginView>
> ..............
> ============content page codebehind==========
>   protected void Page_Load(object sender, EventArgs e)
>     {
>     
>         LoginView lv = Master.FindControl("LoginView1") as LoginView;
>
>         HyperLink link = lv.FindControl("HyperLink2") as HyperLink;
>
>         if(link !=null)
>         {
>             link.DataBind();
>         }
>
>     }
> ====================================
>
> Please let me know if you have anything unclear or any further questions on
> this.
>
> Sincerely,
>
> Steven Cheng
>
> Microsoft MSDN Online Support Lead
> 
>
> This posting is provided "AS IS" with no warranties, and confers no rights.
>
>
>
>

"Steven Cheng[MSFT]" wrote:

> Thanks for your reply Morris,
>
> So far I haven't found any particular thing incorrect here. Would you
> create a simple repro page(1 master page + 1 content page) and send it to
> me (through the email in my signature and remove "online")?  Thus, I can
> test it in my local environment. Also, I've attached my test pages in this
> message for your reference. You can get them by visiting the thread through
> Outlook Express.
>
> Please feel free to let me know if there is anything unclear.
>
> Sincerely,
>
> Steven Cheng
>
> Microsoft MSDN Online Support Lead
> 
>
> This posting is provided "AS IS" with no warranties, and confers no rights

"Steven Cheng[MSFT]" wrote:

> Hi Morris,
>
> I've just checked your code and found out what's the problem. Actually, it
> is a simple mistake. I originally thought that the "HyperLink1"(which need
> to be hide) is on the Master Page. However, from your page code, it is on
> content page's template.  Thus, you do not need to use Master.FindControl
> to reference the LoginView, you can directly reference the LoginView
> control and call FindControl on it to locate the Hyperlink. Below is the
> modified code of "default.aspx", I've tested and it worked correctly in my
> local environment(for your test project).
>
> ========================
> <script runat="server">
>
>     protected void Page_Load(object sender, EventArgs e)
>     {
>        
>
>         Response.Write("<br/>IsUserInRole('administrator'): " +
> User.IsInRole("administrator"));
>        
>         // You do not need to use Master.FindControl here.
>         //directly call Findcontrol on the LoginView member
>         LoginView lv = this.LoginView1;
>        
>         if (lv != null)
>         {
>             HyperLink myControl1 = lv.FindControl("HyperLink1") as
> HyperLink;
>
>             if (myControl1 != null)
>             {
>                 Response.Write(myControl1.ToString());
>                 myControl1.DataBind();
>             }
>         }
>     }
> </script>
> =============================
>
> Hope this helps.
>
> Sincerely,
>
> Steven Cheng
>
> Microsoft MSDN Online Support Lead
>
>
> This posting is provided "AS IS" with no warranties, and confers no rights.
>
>

"MikeS" wrote:

> Perhaps a loginview control will work for you.
>
>         <asp:LoginView ID="LoginView1" runat="server">
>             <RoleGroups>
>                 <asp:RoleGroup Roles="Administrator">
>                     <ContentTemplate>
>                         <asp:HyperLink ID="HyperLink1"
> runat="server">HyperLink</asp:HyperLink>
>                     </ContentTemplate>
>                 </asp:RoleGroup>
>             </RoleGroups>
>         </asp:LoginView>
>
>

"MikeS" wrote:

> You might nest a second loginview control, that contains only the
> hyperlink for the specific rolegroup,  inside the first loginview
> control.
>
> To me that seems more consistent with the toolsets features than
> calling IsUserInRole to manipulate the UI.
>
>