CODEWITHSUNDEEP
c#asp.netweb
kacalapy
kacalapy

Reputation: 10164

show html elements based on user's role

I am trying to hide html elements from plain users such that only users. I have simple asp.net web form setup that makes use of roles provider and membership.

<li runat="server" id="li1" visible ='<%# HttpContext.Current.User.IsInRole("admin") %>'><a href="screeners.aspx"><span> Admin link</span></a></li>

I also am trying this without success:

<li runat="server" id="liAdminUsers" visible ='<%# isAdmin %>'><a  href="screeners.aspx"><span> The Hopper</span></a></li>

the code behind is:

public bool isAdmin =false;
            protected void Page_Load(object sender, EventArgs e)
            {

                isAdmin = Page.User.IsInRole("admin");
                       }

update: I know I can get it working by adding in the code behind:

liAdminUsers.Visible = false ;

but want a UI solution in the .aspx code

Upvotes: 0

Views: 1884

Answers (7)

Soma Yarlagadda
Soma Yarlagadda

Reputation: 2943

I had a similar issue earlier and I solved it by declaring a protected variable in .aspx.cs file and directly using it in the aspx page.

Aspx Page:

<li runat="server" id="li1" visible ='<%# IsAdmin %>'>
    <a href="screeners.aspx"><span> Admin link</span></a>
</li>

Aspx.cs File:

protected bool IsAdmin = false;

Upvotes: 0

Parviz Bazgosha
Parviz Bazgosha

Reputation: 167

in aspx files you can try :

<% if (isAdmin()==true ) {  %>
your html codes and server controlls

<%}>

if isAdmin retruns true asp write yours codes in (your html codes and server controlls) your page.

Upvotes: -1

MysteriousLab
MysteriousLab

Reputation: 394

If you are reaching a variable from code behind, you need to use <%= isAdmin%> , not <%# isAdmin()%>

Upvotes: 0

pampi
pampi

Reputation: 547

I suggest you formulate a class that will hide the said elements.

CSS 

hide-elements {
  display:none;
}

show-elements {
 display:block;
}

C# CodeBehind

public string isAdmin()
{
   if (condition == false)
   return "hidden-elements";
   else
   return "show-elements";
}

HTML code

<li runat="server" id="liAdminUsers" class='<%# isAdmin() %>'>.....</li>

Hope this help. :D (my first post)

Upvotes: 0

to StackOverflow
to StackOverflow

Reputation: 124794

You are using data-binding syntax <%# ... %>, so you need to call Page.DataBind()

You typically call DataBind() in your Page_Load method.

Upvotes: 2

Ali Adravi
Ali Adravi

Reputation: 22823

Write a static method in code behind to test the role

public static bool IsAdmin(){
   //chech and return true or false
}

In html call this method like

<li runat="server" id="liAdminUsers" visible ='<%# isAdmin() %>'>.....</li>

In this way you can control you logic like any other method.

Or you can directly set element visible false in your code behind

public static void IsAdmin(){
     var admin = ....; //check current user role;       
     liAdminUsers.Visible = admin;
}

Upvotes: 0

IrishChieftain
IrishChieftain

Reputation: 15253

I once did something similar using a custom XML file with an attribute indicating if roles were applied or not for a particular application link - and if so, another attribute containing the role name. The code-behind would then check the custom membership store using the logged-in users network identity for authorization checking.

Upvotes: 0

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