ValidateCredentials始终返回false [英] ValidateCredentials always returns false

问题描述

我想在应用程序上使用此方法，以便用户通过输入其Windows网络用户ID和密码登录：

  Imports  System.DirectoryServices.AccountManagement 
 
  Public  函数 IsValid（ ByVal  UserId  As  字符串， ByVal 密码作为  String ） as   Boolean  
  Dim 结果作为 布尔 = 错误 
 
 尝试 
 昏暗 PC  As  新 PrincipalContext（ContextType.Domain，  MyDomain）
结果= PC.ValidateCredentials（UserId，密码）
  Catch  ex  As 异常
 投掷 ex 
 结束 尝试 
 
 返回结果
 < span class =code-keyword>结束 功能 

我发现的每一份文件都证明这是正确的。我已经确认正在正确创建 PC 并指向正确的网络域。我已经验证用户标识和密码都是正确的，并且用户存在于请求的域中。然而，对 PC.ValidateCredentials 的调用总是返回false。



我有另一个方法，它通过ActiveDirectory，但它涉及很多开销，大约需要10秒钟来验证。那个用相同的域名，用户ID和密码返回true。



我假设我做错了什么。有什么建议？

解决方案

您好，



您可以尝试以下代码。

使用pc = New PrincipalContext（ContextType.Domain，  domain.lan，用户名，密码）
如果pc.ValidateCredentials（用户名，密码）那么
尝试
使用searcher = New PrincipalSearcher（New UserPrincipal（pc））
 searcher.QueryFilter .SamAccountName = username 
 Dim u As Principal = searcher.FindOne（）
 End using 
 Catch generatedExceptionName As Exception 
返回 没有权利处理广告 
结束尝试
否则
返回  用户无法登录 
结束如果
结束使用

希望这对你有帮助。

谢谢

喜欢这个：

  Imports  System.DirectoryServices.AccountManagement 
 
  Public  < span class =code-keyword>函数 IsValid（ ByVal  UserId 作为 字符串， ByVal 密码作为  String ） As   Boolean  
  Dim 结果作为 布尔 
 
 尝试 
结果= 错误 
  Dim  PC 作为 新 PrincipalContext（ContextType.Domain，   MyDomain）
结果= PC.ValidateCredentials（UserId，密码）
  Catch  ex 作为例外
 投掷 ex 
 结束 < span class =code-keyword>尝试 
 
 返回结果
 结束 功能 
 

引用：

最终解决方案由Gurvinder Singh @ iGate

 使用（PrincipalContext pc =  new  PrincipalContext（ContextType.Domain，serverName））
 {
  return  pc.ValidateCredentials（userName，password，ContextOptions.Negotiate）; 
} 

这对我来说总是有用

 ContextOptions.Negotiate 

I would like to use this method on an application, so that a user would log in by entering their Windows network user id and password:

Imports System.DirectoryServices.AccountManagement

    Public Function IsValid(ByVal UserId As String, ByVal Password As String) As Boolean
        Dim Result As Boolean = False

        Try
            Dim PC As New PrincipalContext(ContextType.Domain, "MyDomain")
            Result = PC.ValidateCredentials(UserId, Password)
        Catch ex As Exception
            Throw ex
        End Try

        Return Result
    End Function

Every piece of documentation I have found shows this to be correct. I have verified that PC is being created properly and is pointing to the correct network domain. I have verified that the userid and password are both correct, and that the user exists in the requested domain. And yet, the call to PC.ValidateCredentials always returns false.

I have a another method, which goes through ActiveDirectory, but it involves a lot of overhead and takes about 10 seconds to validate. That one returns true with the same domain, userid and password.

I assume I'm doing something wrong. Any suggestions?

解决方案

Hi,

You can try following code.

Using pc = New PrincipalContext(ContextType.Domain, "domain.lan", username, password)
	If pc.ValidateCredentials(username, password) Then
		Try
			Using searcher = New PrincipalSearcher(New UserPrincipal(pc))
				searcher.QueryFilter.SamAccountName = username
				Dim u As Principal = searcher.FindOne()
			End Using
		Catch generatedExceptionName As Exception
			Return "no rights to work on ad"
		End Try
	Else
		Return "user cannot login"
	End If
End Using

Hope this will help you.
thanks

Like This:

Imports System.DirectoryServices.AccountManagement

Public Function IsValid(ByVal UserId As String, ByVal Password As String) As Boolean
    Dim Result As Boolean

    Try
        Result = False
        Dim PC As New PrincipalContext(ContextType.Domain, "MyDomain")
        Result = PC.ValidateCredentials(UserId, Password)
    Catch ex As Exception
        Throw ex
    End Try

    Return Result
End Function

Quote:

Final Solution By Gurvinder Singh @ iGate

using (PrincipalContext pc = new PrincipalContext(ContextType.Domain, serverName))
              {
                  return pc.ValidateCredentials(userName, password, ContextOptions.Negotiate);
              }

This always works for me

ContextOptions.Negotiate

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