ASP.NET MVC->角色.isuserinrole(用户名,角色)

是否需要为添加任何引用或导入任何命名空间 roles.isuserinrole(username,role)->是否没有给出正确的结果。

<% if(Model.Count < 1)
    {%>
        No User's Add Under You!
    <% } else {
        foreach (var item in Model) { %>
    <tr class="tblheader">
        <th> User Name </th>
        <th> Last Activity      </th>
        <th> Administrator     </th>
        <th> Base User    </th>
        <th> Print User    </th>
        <th> SDI User </th>
        <th> Edit User         </th>
    </tr>
    <% if(Model.Count < 1)
    {%>
        No User's Add Under You!
    <% } else {
        foreach (var item in Model) { %>

<td class="usertd">
            <%if(Roles.IsUserInRole(item.UserName,"Administrator")) { %>
             <asp:Image runat="server" ImageUrl="~/Content/images/buttons/btn_rnd_save.png" alt="Yes" />
            <% } else { %>
            <asp:Image runat="server" ImageUrl="~/Content/images/buttons/btn_Close.gif" alt="No" />
          <% } %>           
          </td>
            <td class="usertd">
            <%if(Roles.IsUserInRole(item.UserName,"BaseUser")) { %>
             <asp:Image runat="server" ImageUrl="~/Content/images/buttons/btn_rnd_save.png" alt="Yes" />
            <% } else { %>
            <asp:Image runat="server" ImageUrl="~/Content/images/buttons/btn_Close.gif" alt="No" />
          <% } %>           
          </td>