show List of Roles in a dropdown box but except "Admin" role

Question

hi, i am having a dropdown box showing list of roles, i used Roles.GetAllroles() for showin' all roles in dropdown box but i don't wanna show a role named "Admin" in the dropdown box.

Answer 1

(1) After you create the Selectlist in the controller removed the Admin ListItem

SelectList sl =  new SelectList(Roles.GetAllRoles(), "roleName")
//remove items as needed
ViewData["roleName"] = sl;

Or (2) step through the GetAllroles() collection and don't add the role if it is the Admin role.

Answer 2

Try creating an extension method on the provider type and wrap the call. This will allow you to add additional criteria later if needed.

public static class RolesExtension
{
    public static string[] GetAllNonAdminRoles(this RoleProvider providerInstance)
    {
        return (from role in providerInstance.GetAllRoles()
                where !role.Equals("Admin", StringComparison.InvariantCultureIgnoreCase)
                select role).ToArray();
    }
}

Instead of ...

System.Web.Security.Roles.GetAllRoles();

Call this ...

System.Web.Security.Roles.Provider.GetAllNonAdminRoles();