C# 错误：试图读取或写入受保护的内存这通常表示其他内存已损坏

我在下面的程序中得到了在标题中声明的错误。 我正在尝试模拟用户。 这是我的代码库

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.Data.SqlClient;
using System.Data.OleDb;
using Microsoft.AnalysisServices.AdomdClient;
using Microsoft.AnalysisServices;
using Microsoft.AnalysisServices.Xmla;
using System.Security.Principal;
using System.Runtime.InteropServices;



namespace cubeStructure
{
    class Program
    {
        static void Main(string[] args)
        {

            connectToServer();
        }
        private static void connectToServer()
        {
            try
            {
                Console.WriteLine("Connecting to server...");
                XmlaClient oConn = new XmlaClient();
                Boolean validUser = false;
                validUser = impersonateValidUser("haadmin", "HAICPM", "ha05admin");
                if (validUser)
                {
                    Console.WriteLine("User Aethunticated");
                }
                else
                {
                    Console.WriteLine("Authentication failed");
                }
                string connectionString = "Provider=MSOLAP.3;Data Source=192.168.136.233\\sql2008;Persist Security Info=True;User ID=sa;Initial Catalog=AdventureWorksDW";
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                Console.ReadLine();
            }
        }

        [DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        public static extern Boolean RevertToSelf();

        [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        private static extern long CloseHandle(IntPtr handle);

        [DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        private static extern int LogonUserA(string lpszUsername, string lpszDomain, string lpszPassword, int dwLogonType, int dwLogonProvider, IntPtr phToken);

        [DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        private static extern int DuplicateToken(IntPtr ExistingTokenHandle, int ImpersonationLevel, IntPtr DuplicateTokenHandle);
        public static WindowsImpersonationContext impersonationContext;

        public static bool impersonateValidUser(string userName, string domain, string password)
        {
            Console.WriteLine("Going Step 1");
            try
            {
                bool functionReturnValue = false;
                int LOGON32_LOGON_INTERACTIVE = 2;
                int LOGON32_PROVIDER_DEFAULT = 0;
                WindowsIdentity tempWindowsIdentity = default(WindowsIdentity);
                IntPtr token = IntPtr.Zero;
                IntPtr tokenDuplicate = IntPtr.Zero;
                functionReturnValue = false;
                Console.WriteLine("Going Step 2");
                if (RevertToSelf())
                {   
                    if (LogonUserA("haadmin", ".", "ha05admin", LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, token) != 0)
                    {   
                        if (DuplicateToken(token, 2, tokenDuplicate) != 0)
                        {
                            tempWindowsIdentity = new WindowsIdentity(tokenDuplicate);
                            impersonationContext = tempWindowsIdentity.Impersonate();
                            if ((impersonationContext != null))
                            {
                                functionReturnValue = true;
                            }
                        }
                    }
                }
                if (!tokenDuplicate.Equals(IntPtr.Zero))
                {
                    CloseHandle(tokenDuplicate);
                }
                if (!token.Equals(IntPtr.Zero))
                {
                    CloseHandle(token);
                }
                return functionReturnValue;
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                throw;
            }
        }
    }
}

我在logonUserA方法中遇到异常。 将DLL添加到代码中时是否有任何错误？ 有谁能在这方面帮助我吗

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谢谢

请让您的问题更加具体，首先从代码中的何处出现此异常开始？pinvoke声明中的错误太多了。将LogonUserA与CharSet.Auto一起使用就是其中之一。请访问pinvoke.net以找到好的声明。@HansPassant在pinvoke.net上有很多写得很差的p/Invoke声明。这个网站真的很有用，但我不会太依赖它。@All。。谢谢你的帮助。我在这里犯的错误是需要给出logonusera方法的引用，如logonusera字符串lpszUsername、字符串lpszDomain、字符串lpszPassword、int dwLogonType、int dwLogonProvider、ref IntPtr phToken。。。同样的道理也适用于DuplicateToken方法。。。