asp.net添加用户

AddUser.html

 <!DOCTYPE html>
 <html xmlns="http://www.w3.org/1999/xhtml">
 <head>
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
     <title></title>
 </head>
 <body>
     <form action="AddUser.ashx" method="post">
         <table border="">
             <tr>
                 <td>
                    ID：
                 </td>
                 <td>
                     <input type="text" name="txtId" value="" />
                 </td>
             </tr>
             <tr>
                 <td>
                     姓名：
                 </td>
                 <td>
                     <input type="text" name="txtName" value="" />
                 </td>
             </tr>
             <tr>
                 <td>
                     邮箱：
                 </td>
                 <td>
                     <input type="password" name="txtEmail" value="" />
                 </td>
             </tr>
             <tr>
                 <td>
                     地址：
                 </td>
                 <td>
                     <input type="text" name="txtAddress" value="" />
                 </td>
             </tr>
             <tr>
                 <td colspan="" align="center">
                     <input type="submit" name="" value="注册" />
                 </td>
             </tr>
         </table>
     </form>
 </body>
 </html>

AddUser.ashx

 <%@ WebHandler Language="C#" Class="AddUser" %>

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

 public class AddUser : IHttpHandler
 {

     public void ProcessRequest(HttpContext context)
     {
         context.Response.ContentType = "text/html";
         context.Response.Write("Hello World");

         string str = ConfigurationManager.ConnectionStrings["conStr"].ConnectionString;
         //string sql = string.Format("insert into student(id, name, email, address) values(id, name, email, address)");
         using (SqlConnection con = new SqlConnection(str))
         {
             using (SqlCommand cmd = new SqlCommand())
             {
                 //分开写cmd的参数
                 con.Open();
                 cmd.CommandText = "insert into student(id, name, email, address) values(@id, @name, @email, @address)";
                 cmd.Connection = con;
                 cmd.Parameters.Add("@id", context.Request.Form["txtId"]);
                 cmd.Parameters.Add("@name", context.Request.Form["txtName"]);
                 cmd.Parameters.Add("@email", context.Request.Form["txtEmail"]);
                 cmd.Parameters.Add("@address", context.Request.Form["txtAddress"]);
                 if (cmd.ExecuteNonQuery() > )
                 {
                     //重定向，跳转
                     context.Response.Redirect("UserList.ashx");
                     context.Response.Write("注册成功！");
                 }
                 else
                 {
                     context.Response.Write("注册失败！");
                 }
             }
         }

     }

     public bool IsReusable
     {
         get
         {
             return false;
         }
     }

 }