Using directives

namespace Impersonal
{
    class Program
    {
        测试代码

        [DllImport("advapi32.dll", SetLastError = true)]
        public extern static bool LogonUser(String lpszUsername, String lpszDomain,
            String lpszPassword, int dwLogonType,
            int dwLogonProvider, ref IntPtr phToken);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        public extern static bool CloseHandle(IntPtr handle);

        [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public extern static bool DuplicateToken(IntPtr ExistingTokenHandle,
            int SECURITY_IMPERSONATION_LEVEL, ref IntPtr DuplicateTokenHandle);

        public delegate void ImpersonatedWork();
        /// <summary>
        /// 以指定用户的身份去做一件事情
        /// </summary>
        /// <param name="UserName"></param>
        /// <param name="PWD"></param>
        /// <param name="WhatToDo"></param>
        public static void ImpersonateAndDo(string UserName, string PWD, ImpersonatedWork WhatToDo)
        {
            扮演用户
            以新用户身份调用
            取消扮演
        }
    }
}