使用时添加以下引用单元

其中OleDb使用Access,sqlserver使用SqlClient

using System.Web.Security;
using System.Data.OleDb;

using System.Data.SqlClient;
using System.Configuration;

在web.config中配制authebtication

＜authentication mode="Forms"＞
＜forms name=".ASPXUSERDEMO" loginUrl="login.aspx" protection="All" timeout="60" /＞
＜/authentication＞
＜authorization＞
＜deny users="?" /＞
＜/authorization＞

创建login.aspx页面

计算MD5：

string strInputPass = System.Web.Security.FormsAuthentication
.HashPasswordForStoringInConfigFile("manager","md5");
Response.Write(strInputPass); //从数据库中读出计算

if ((UserEmail.Text == "qianbo") && (UserPass.Text== strInputPass))
{
FormsAuthentication.RedirectFromLoginPage(UserEmail.Text, false);
}
else
{
Msg.Text = "Invalid Credentials: Please try again";
}



private void Page_Load(object sender, System.EventArgs e)
{
WelCome.Text = "Hello, " + User.Identity.Name;// 在此处放置用户代码以初始化页面

}

private void InitializeComponent()
{
this.Button1.Click += new System.EventHandler(this.Button1_Click);
this.Load += new System.EventHandler(this.Page_Load);

}
#endregion

登出：

private void Button1_Click(object sender, System.EventArgs e)
{
FormsAuthentication.SignOut();
Response.Redirect("login.aspx");
}