由于对象的当前状态，操作无效。（外联网）

Question

我正在使用以下代码来模拟使用基于表单的身份验证的外联网上的用户，但是当涉及到这一行生成时，它会引发

InvalidOperationException。 我已经测试过，知道存在的allusers [4]。

string siteStr = "http://mywebSiteUrl/";

SPSecurity.RunWithElevatedPrivileges(delegate()
{
    using (SPSite site = new SPSite(siteStr))
    {
        using (SPWeb web = site.OpenWeb())
        {
             SPUserToken userToken = web.AllUsers[4].UserToken;

             SPSite s = new SPSite(siteStr, userToken);

             SPWeb w = s.OpenWeb();

             myLiteral.Text = "Currently logged in as: " + w.CurrentUser.ToString() + "( " + w.CurrentUser.Name + ")";
         }
    }
});

.

Answer 1

The problem solved when You add the user to the site under site setting -> people and groups

Answer 2

Can you try following, I have just kept new SPSite and SPWeb object outside RunWithElevatedPrivileges

string siteStr = "http://mywebSiteUrl/";
SPUserToken userToken;

SPSecurity.RunWithElevatedPrivileges(delegate()
{
  using (SPSite site = new SPSite(siteStr))
  {
    using (SPWeb web = site.OpenWeb())
    {
         userToken = web.AllUsers[4].UserToken;
     }
   }
});

SPSite s = new SPSite(siteStr, userToken);

SPWeb w = s.OpenWeb();

myLiteral.Text = "Currently logged in as: " + w.CurrentUser.ToString() + "( " + w.CurrentUser.Name + ")";