windowslogin.aspx.cs

ASP C#代码实例 适合初学人士学习使用

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Security.Principal;
using System.Web.Security;
using System.Runtime.InteropServices;

namespace Example_12_3
{
	/// <summary>
	/// Summary description for WindowsLogin.
	/// </summary>
	public class WindowsLogin : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox tUserName;
		protected System.Web.UI.WebControls.TextBox tPassword;
		protected System.Web.UI.WebControls.Button UserLoginBtn;
		protected System.Web.UI.WebControls.TextBox tDomain;
		protected System.Web.UI.WebControls.Label LoginMsg;
		protected System.Web.UI.WebControls.Button CancelBtn;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// Put user code to initialize the page here
		}

		private bool Login(string UserName, string Password, string Domain)
		{
			string text1 = Domain.Trim();
			string text2 = UserName.Trim();
			text2 = text2.Replace("/", @"\");
			int num1 = text2.IndexOf('\\');
			if (num1 != -1)
			{
				text1 = text2.Substring(0, num1);
				text2 = text2.Substring(num1 + 1);
			}
			else
			{
				num1 = text2.IndexOf('@');
				if (num1 != -1)
				{
					text1 = text2.Substring(num1 + 1);
					text2 = text2.Substring(0, num1);
				}
			}
			return AuthenticateUser(text2, Password.Trim(), text1);
		}
 
		private bool AuthenticateUser(string UserName, string Password, string Domain)
		{
			bool flag1 = false;
			try
			{
				int num1;
				IntPtr ptr1;
				if (!LogonUser(UserName, Domain, Password, 2, 0, out num1))
				{
					return flag1;
				}
				ptr1 = new IntPtr(num1);
				WindowsIdentity identity1 = new WindowsIdentity(ptr1);
				WindowsPrincipal principal1 = new WindowsPrincipal(identity1);
				HttpContext.Current.User = principal1;
				FormsAuthentication.SetAuthCookie(principal1.Identity.Name, false);
				FormsAuthentication.RedirectFromLoginPage(UserName, false);
				flag1 = true;
			}
			catch (Exception)
			{
			}
			return flag1;
		}
 

		[DllImport("advapi32.dll")]
		public static extern bool LogonUser(
			string lpszUsername, 
			string lpszDomain, 
			string lpszPassword, 
			int dwLogonType, 
			int dwLogonProvider, 
			out int phToken
			);

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.UserLoginBtn.Click += new System.EventHandler(this.UserLoginBtn_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void UserLoginBtn_Click(object sender, System.EventArgs e)
		{
			if(tDomain.Text.Trim().Length > 0 && tUserName.Text.Trim().Length > 0 && tPassword.Text.Trim().Length > 0)
			{
				if(Login(tUserName.Text.Trim(),tPassword.Text.Trim(),tDomain.Text.Trim()) == true)
				{
					LoginMsg.Text = "登录成功！！！";
					LoginMsg.Visible = true;
					return;
				}
				else
				{
					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;
				}
			}
		}
	}
}