Windows登录功能使用C#实现的示例

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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