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ASP.NET,表单验证

Writer: delv Article type: Programming skills(编程技巧) Time: 2014/1/23 2:55:54 Browse times: 320 Comment times: 0

ASP.NET,表单验证


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ASP.NET 表单验证:代码及讲解_[Asp.Net教程]























Step 1:新建数据库(库:MyForms ;表:users ;字段:ID,userName, userPwd);
Step 2:新建网站,web.config 的文件全部代码如下:


web.config 的全部代码

































Step 3:添加一个 login.aspx 页面;拖2个 TextBox ,1个Button 和1个CheckBox ;
并将CheckBox 的text 属性设为:“是否保存Cookis ";
Step 4:login.aspx 的隐藏代码如下:

login 全部隐藏代码
using System;
using System.Data;
using System.Configuration;
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.Data.SqlClient; //导入命名空间

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}
protected void Button1_Click(object sender, EventArgs e)
{
string userName = TextBox1.Text.Trim();
string userPwd = TextBox2.Text.Trim();
SqlConnection con = new SqlConnection("Server=.;Database=MyForms;User ID=sa;Password=123456");
con.Open();
SqlCommand cmd = new SqlCommand("select count(*) from users where userName='" + userName + "' and userPwd='" + userPwd + "'", con);
int count = Convert.ToInt32(cmd.ExecuteScalar());
if (count > 0)
{
System.Web.Security.FormsAuthentication.SetAuthCookie(this.TextBox1.Text, this.CheckBox1.Checked);
Response.Redirect("Default.aspx");
//上面两行,也可以换成下面一行,如通过验证则直接转向请求的页面,而不需要Responsel.Redirect("");
//System.Web.Security.FormsAuthentication.RedirectFromLoginPage(this.TextBox1.Text, false);
}

else
{
Response.Write("用户不合法");
}
}
}

Step 5:拖一个Button 到 Default.aspx 上,将其text 属性设为"登出",其事件代码如下:

Button 事件代码
protected void Button1_Click(object sender, EventArgs e)
{
System.Web.Security.FormsAuthentication.SignOut();
}


































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