C#实现Windows系统账户密码登录

WindowsLogin.zip

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Runtime.InteropServices; using System.Security.Principal; using System.Text; using System.Windows.Forms; namespace WindowsLogin { public partial class FormLogin : Form { [DllImport("advapi32.dll", CharSet = CharSet.Auto)] public static extern bool LogonUser(string lpszUsername, string lpszDomain, string lpszPassword, int dwLogonType, int dwLogonProvider, out int phToken); public FormLogin() { InitializeComponent(); } private void FormLogin_Load(object sender, EventArgs e) { textBoxUser.Text = Environment.UserName; textBoxDomain.Text = Environment.UserDomainName; textBoxPwd.Focus(); } private void btnLogin_Click(object sender, EventArgs e) { //验证用户的输入是否为空 if (textBoxDomain.Text.Trim().Length > 0 && textBoxUser.Text.Trim().Length > 0 && textBoxPwd.Text.Trim().Length > 0) { //调用函数Login(string UserName, string Password, string Domain) //实现Windows登录 if (Login(textBoxUser.Text.Trim(), textBoxPwd.Text.Trim(), textBoxDomain.Text.Trim()) == true) { //显示登录成功信息 MessageBox.Show("登录成功！！！"); return; } else { //显示登录失败信息 MessageBox.Show( "登录失败，请重新输入用户名称、密码及其系统域名！！！"); } } } 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); flag1 = true; } catch (Exception) { } return flag1; } } }

参考：https://blog.csdn.net/lassewang/article/details/8178400