Roles.GetRolesForUser(UserName) not working

Roles.GetRolesForUser(UserName) .


I have follwing codes in my Web.config,


<authentication mode="Forms">
      <forms slidingExpiration="true" defaultUrl="admin/Welcome.aspx" timeout="60"/>    </authentication>


<roleManager enabled="true" defaultProvider="SecurityTutorialsSqlRoleProvider">
      <providers>
        <add name="SecurityTutorialsSqlRoleProvider" type="System.Web.Security.SqlRoleProvider" applicationName="SecurityTutorials" connectionStringName="SecurityTutorialsConnectionString"/>
      </providers>
</roleManager>


Any help is appreciated.




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