参数“用户名”不得为空

本文关键字:用户名 用户 参数 | 更新日期: 2023-09-27 17:57:15

我创建了一个方法,该方法应该为使用成员资格的登录用户返回属性soredin Active Directory。

我收到此错误The parameter 'username' must not be empty.知道如何解决它吗?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Configuration;
using System.Web.Security;
using System.DirectoryServices.AccountManagement;
using System.Threading;
   public static string SetGivenNameUser()
    {
        string givenName = string.Empty;
        MembershipUser user = Membership.GetUser();
        PrincipalContext ctx = new PrincipalContext(ContextType.Domain);
        UserPrincipal userP = UserPrincipal.FindByIdentity(ctx, user.UserName);
        if (userP != null)
            givenName = userP.GivenName;
        return givenName;
    }

ArgumentException: The parameter 'username' must not be empty.
Parameter name: username]
   System.Web.Util.SecUtility.CheckParameter(String& param, Boolean checkForNull, Boolean checkIfEmpty, Boolean checkForCommas, Int32 maxSize, String paramName) +2386569
   System.Web.Security.ActiveDirectoryMembershipProvider.CheckUserName(String& username, Int32 maxSize, String paramName) +30
   System.Web.Security.ActiveDirectoryMembershipProvider.GetUser(String username, Boolean userIsOnline) +86
   System.Web.Security.Membership.GetUser(String username, Boolean userIsOnline) +63
   System.Web.Security.Membership.GetUser() +19

参数“用户名”不得为空

除非你只是设置了授权,在这种情况下,httpcontext 对象需要重置,获取用户名的最可靠方法是

HttpContext.Current.User.Identity.Name

因此,重构代码将如下所示:

UserPrincipal userP = UserPrincipal.FindByIdentity(ctx, HttpContext.Current.User.Identity.Name);

这样做的原因是,某些对象有自己的本地"钩子"成员资格。有时这些钩子还没有填满我的httpcontext对象。

我分享了解决我问题的代码。我的问题是我在用户未登录时调用SetGivenNameUser,因此我必须进行调整。谢谢大家的建议。

   public static string SetGivenNameUser()
    {
        string givenName = string.Empty;
        string currentUser = HttpContext.Current.User.Identity.Name;
        // If the USer is logged in
        if (!string.IsNullOrWhiteSpace(currentUser))
        {
            MembershipUser user = Membership.GetUser();
            PrincipalContext ctx = new PrincipalContext(ContextType.Domain);
            UserPrincipal userP = UserPrincipal.FindByIdentity(ctx, user.UserName);
            if (userP != null)
                givenName = userP.GivenName;
        }
        return givenName;
    }