C#实现的WINDOWS登录功能示例

本文实例讲述了c#实现的windows登录功能。分享给大家供大家参考，具体如下：

using system;
using system.data;
using system.configuration;
using system.collections;
using system.web;
using system.web.security;
using system.web.ui;
using system.web.ui.webcontrols;
using system.web.ui.webcontrols.webparts;
using system.web.ui.htmlcontrols;
using system.runtime.interopservices;
using system.security.principal;
namespace yutest
{
  public partial class _default : system.web.ui.page
  {
    [dllimport("advapi32.dll", charset = charset.auto)]
    public static extern bool logonuser(string lpszusername,string lpszdomain,string lpszpassword,int dwlogontype,int dwlogonprovider,out int phtoken);
    protected void page_load(object sender, eventargs e)
    {
      string aaa = system.threading.thread.currentprincipal.identity.name;
      //string bbb = system.threading.thread.currentprincipal.identity.n;
      //system.environment.userdomainname
      //system.environment.username
    }
    protected void button1_click(object sender, system.eventargs e)
    {
      //验证用户的输入是否为空
      if (tdomain.text.trim().length > 0 && tusername.text.trim().length > 0&& tpassword.text.trim().length > 0)
      {  //调用函数login(string username, string password, string domain)
        //实现windows登录
        if (login(tusername.text.trim(), tpassword.text.trim(),tdomain.text.trim()) == true)
        {  //显示登录成功信息
          loginmsg.text = "登录成功！！！";
          loginmsg.visible = true;
          return;
        }
        else
        {  //显示登录失败信息
          loginmsg.text = "登录失败，请重新输入用户名称、密码及其系统域名！！！";
          loginmsg.visible = true;
        }
      }
    }
    private bool login(string username, string password, string domain)
    {    //获取用户名称和系统域名
      string text1 = domain.trim();
      string text2 = username.trim();
      text2 = text2.replace("/", @"\");   //处理符号“/”
      int num1 = text2.indexof('\\');    //获取符号“\”的索引
      if (num1 != -1)
      {  //格式化用户名称和系统域名
        text1 = text2.substring(0, num1);
        text2 = text2.substring(num1 + 1);
      }
      else
      {  //格式化用户名称和系统域名
        num1 = text2.indexof('@');
        if (num1 != -1)
        {
          text1 = text2.substring(num1 + 1);
          text2 = text2.substring(0, num1);
        }
      }
      //调用函数authenticateuser()实现用户windows登录
      return authenticateuser(text2, password.trim(), text1);
    }
    private bool authenticateuser(string username, string password,string domain)
    {       //设置用户登录成功的标志
      bool flag1 = false;
      try
      {
        int num1; intptr ptr1;
        //调用windows登录的api
        if (!logonuser(username, domain, password, 2, 0, out num1))
        {  //返回登录结果
          return flag1;
        }
        //调用.net中的windows登录
        ptr1 = new intptr(num1);
        windowsidentity identity1 = new windowsidentity(ptr1);
        windowsprincipal principal1 = new windowsprincipal(identity1);
        httpcontext.current.user = principal1;
        //设置系统cookie和重定向页面
        formsauthentication.setauthcookie(principal1.identity.name, false);
        formsauthentication.redirectfromloginpage(username, false);
        flag1 = true;
      }
      catch (exception) { }
      return flag1;
    }
  }
}

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希望本文所述对大家c#程序设计有所帮助。