asp.net应用程序userprincipal.findbyidentity服务器与浏览器的工作原理，从我的机器抛出异常 [英] asp.net application userprincipal.findbyidentity works with browser on server, throws exception from my machine

问题描述

我有一个在IIS 7的服务器上运行，在这个节目，我需要找到所有当前用户是其成员组的应用程序。当我使用浏览器访问该网站的服务器上，它完美的作品，但是当我试图从我的机器访问它，它不断抛出COM异常，这里是code我用得到的用户群体。

 私人列表＆LT;串GT; GetUserGroups（用户名字符串）
    {
        //对于输出字符串的列表。
        清单＆LT;串GT;输出=新的List＆LT;串GT;（）;
        尝试
        {
            //在使用块，便于处置创建PrincipalContext对象
            使用（PrincipalContext域=新PrincipalContext（ContextType.Domain，域））
            //使用（用户的WindowsIdentity = WindowsIdentity.GetCurrent（））
            {                //通过查找用户创建从一个PrincipalContext的UserPrincipal
                //传递给函数这是一个不断抛出异常的行。
                使用（UserPrincipal用户= UserPrincipal.FindByIdentity（域，IdentityType.SamAccountName，用户名））
                {
                    //检查以确保用户被发现。
                    如果（用户！= NULL）
                    {
                        //获取用户组的集合变量称为组
                        PrincipalSearchResult＆LT;主＆GT;基团= UserPrincipal.Current.GetAuthorizationGroups（）;
                        // IdentityReferenceCollection组= user.Groups;
                        //这个foreach循环经过每个结果的收集组
                        的foreach（在组首席P）
                        {
                            //检查结果是GroupPrincipal对象，不为null
                            如果（p是GroupPrincipal＆放大器;＆安培; p.ToString（）！= NULL）
                            {
                                output.Add（p.ToString（））; //将字符串值添加到输出列表。
                                debugString + =＆LT; BR /＆gt;中+ p.ToString（）;
                            }
                        }
                    }
                }
            }
        }
        赶上（异常前）
        {
            processLog.Text + = ex.ToString（）+ ex.GetType（）;
        }
        //返回组的用户是其成员的列表。
        返回输出;
    }
 

为什么会抛出异常，当我从服务器以外的地方访问它？我怎样才能解决这个问题？

更新：
这里是堆栈跟踪例外，所有的

  

System.Runtime.InteropServices.COMException（0x80072020）：一个
  发生操作错误。在
  System.DirectoryServices.DirectoryEntry.Bind（布尔throwIfFail）在
  System.DirectoryServices.DirectoryEntry.Bind（）在
  System.DirectoryServices.DirectoryEntry.get_AdsObject（）在
  System.DirectoryServices.PropertyValueCollection.PopulateList（）在
  System.DirectoryServices.PropertyValueCollection..ctor（的DirectoryEntry
  进入，字符串propertyName的）在
  System.DirectoryServices.PropertyCollection.get_Item（字符串
  propertyName的）在
  System.DirectoryServices.AccountManagement.PrincipalContext.DoLDAPDirectoryInitNoContainer（）
  在
  System.DirectoryServices.AccountManagement.PrincipalContext.DoDomainInit（）
  在
  System.DirectoryServices.AccountManagement.PrincipalContext.Initialize（）
  在
  System.DirectoryServices.AccountManagement.PrincipalContext.get_QueryCtx（）
  在
  System.DirectoryServices.AccountManagement.Principal.FindByIdentityWithTypeHelper（PrincipalContext
  背景，类型principalType，Nullable`1 identityType，字符串
  identityValue，日期时间refDate）在
  System.DirectoryServices.AccountManagement.Principal.FindByIdentityWithType（PrincipalContext
  背景，类型principalType，IdentityType identityType，字符串
  identityValue）在
  System.DirectoryServices.AccountManagement.UserPrincipal.FindByIdentity（PrincipalContext
  背景下，IdentityType identityType，字符串identityValue）在
  ResetUnlockAccount.ResetUnlockAccount.GetUserGroups（用户名字符串）
  在
  C：\\ ResetUnlockAccount \\ ResetUnlockAccount \\ ResetUnlockAccount.aspx.cs：行
  894

解决方案

％的OP的评论，

  

答案在这里找到： GroupPrincipal方法FindByIdentity抛出异常诡异

  
  

只是不得不添加使用System.Web.Hosting; 和
  使用（HostingEnvironment.Impersonate（））在首先使用在
  原来的code。

I have an application that is running on an IIS 7 server, in this program I need to find all the groups that the current user is a member of. When I access the website using the browser on the server, it works perfectly, but when I try to access it from my machine it keeps throwing a COM exception, Here is the code I'm using to get the user groups.

private List<string> GetUserGroups(string userName)
    {
        //The list of strings for output.
        List<string> output= new List<string>();
        try
        {
            //creating a PrincipalContext object in a using block for easy disposal
            using(PrincipalContext domain = new PrincipalContext(ContextType.Domain,"domain"))
            //using(WindowsIdentity user = WindowsIdentity.GetCurrent())
            {

                //Creating a UserPrincipal from the PrincipalContext by finding the user that 
                //was passed to the function

This is the line that keeps throwing the exception.
                using (UserPrincipal user = UserPrincipal.FindByIdentity(domain,IdentityType.SamAccountName,userName))
                {
                    //Checking to make sure the user was found.
                    if (user != null)
                    {
                        //Getting the users groups in a collection variable called groups
                        PrincipalSearchResult<Principal> groups = UserPrincipal.Current.GetAuthorizationGroups();
                        //IdentityReferenceCollection groups = user.Groups;
                        //This foreach loop goes through each result in the groups collection
                        foreach (Principal p in groups)
                        {
                            //check the result is a GroupPrincipal object and is not null
                            if (p is GroupPrincipal && p.ToString() != null)
                            {
                                output.Add(p.ToString());//Add the string value to the output list.
                                debugString += "<br/>"+p.ToString();
                            }
                        }
                    }
                }
            }
        }
        catch (Exception ex)
        {
            processLog.Text += ex.ToString()+ ex.GetType();
        }
        //return the list of groups the user is a member of.
        return output;
    }

Why does it throw the exception when I access it from a location other than the server? How can I fix it?

Update: Here is the stacktrace exception and all

System.Runtime.InteropServices.COMException (0x80072020): An operations error occurred. at System.DirectoryServices.DirectoryEntry.Bind(Boolean throwIfFail) at System.DirectoryServices.DirectoryEntry.Bind() at System.DirectoryServices.DirectoryEntry.get_AdsObject() at System.DirectoryServices.PropertyValueCollection.PopulateList() at System.DirectoryServices.PropertyValueCollection..ctor(DirectoryEntry entry, String propertyName) at System.DirectoryServices.PropertyCollection.get_Item(String propertyName) at System.DirectoryServices.AccountManagement.PrincipalContext.DoLDAPDirectoryInitNoContainer() at System.DirectoryServices.AccountManagement.PrincipalContext.DoDomainInit() at System.DirectoryServices.AccountManagement.PrincipalContext.Initialize() at System.DirectoryServices.AccountManagement.PrincipalContext.get_QueryCtx() at System.DirectoryServices.AccountManagement.Principal.FindByIdentityWithTypeHelper(PrincipalContext context, Type principalType, Nullable`1 identityType, String identityValue, DateTime refDate) at System.DirectoryServices.AccountManagement.Principal.FindByIdentityWithType(PrincipalContext context, Type principalType, IdentityType identityType, String identityValue) at System.DirectoryServices.AccountManagement.UserPrincipal.FindByIdentity(PrincipalContext context, IdentityType identityType, String identityValue) at ResetUnlockAccount.ResetUnlockAccount.GetUserGroups(String userName) in C:\ResetUnlockAccount\ResetUnlockAccount\ResetUnlockAccount.aspx.cs:line 894

解决方案

Per the OP's comment,

The answer was found here: GroupPrincipal method FindByIdentity throw strange exception

Just had to add using System.Web.Hosting; and using(HostingEnvironment.Impersonate()) over the first using in the original code.

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