Assigning Visible Property of the Button to a Static Method Result

Question

I am trying to hide the button based on the user's role using the following code:

 <asp:Button ID="btndisplayrole" Text="Admin Button" Visible='<%= WebApplication1.SiteHelper.IsUserInRole("Admin") %>' runat="server" OnClick="DisplayRoleClick" />

But when I run the above code I get the following error message:

Cannot create an object of type 'System.Boolean' from its string representation '<%= WebApplication1.SiteHelper.IsUserInRole("Admin") %>' for the 'Visible'

Answer 1

As an alternative solution:

<% if (WebApplication1.SiteHelper.IsUserInRole("Admin"))
    {%>
        <asp:Button ID="btndisplayrole" 
                    Text="Admin Button" 
                    runat="server" 
                    OnClick="DisplayRoleClick" /> 
<%} %>