Asp.Mvc 2.0實現(xiàn)用戶注冊實例講解（1）

--用戶信息表
CREATE TABLE[dbo].[UserInfo]
(
[UserName] [varchar](20)COLLATEChinese_PRC_CI_ASNOTNULL,---用戶名
[UserPwd] [varchar](20)COLLATEChinese_PRC_CI_ASNOTNULL,---密碼
[Email] [varchar](50)COLLATEChinese_PRC_CI_ASNOTNULL--電子郵件
) ON[PRIMARY]
GO
ALTER TABLE[dbo].[UserInfo]ADDCONSTRAINT[PK__UserInfo__C9F2845707020F21]PRIMARYKEYCLUSTERED ([UserName])ON[PRIMARY]
GO
 

/// summary> 
 /// 注冊用戶MODEL 
 /// /summary> 
 public class RegisterModel 
 { 
 /// summary> 
 /// 用戶名 
 /// /summary> 
 [DisplayName("用戶名")] 
 public string UserName 
 { get; set; } 
 
 /// summary> 
 /// 密碼 
 /// /summary> 
 [DisplayName("密碼")] 
 public string UserPwd 
 { 
 get; 
 set; 
 } 
 
 [DisplayName("確認(rèn)密碼")] 
 public string ConfirPwd 
 { 
 get; 
 set; 
 } 
 /// summary> 
 /// 用戶郵箱 
 /// /summary> 
 [DisplayName("郵箱")] 
 public string Email 
 { 
 get; 
 set; 
 } 
 } 

%@ Page Language="C#" Inherits="System.Web.Mvc.ViewPageMvcLogin.Models.RegisterModel>" %> 
 
!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
 
html xmlns="http://www.w3.org/1999/xhtml" > 
head runat="server"> 
 title>注冊頁面/title> 
/head> 
body> 
 div> 
 br /> 
 
 p style="font-size:12px;color:red"> 
 
 %if (ViewData["msg"] != null) 
 {%> 
 %:ViewData["msg"]%> 
 %} %> 
 /p> 
 br /> 
 %Html.BeginForm(); %> 
 
 
 table> 
 tr> 
 td>%: Html.LabelFor(m => m.UserName) %>/td> 
 td> %: Html.TextBoxFor(m => m.UserName) %>/td> 
 /tr> 
 
 tr> 
 td> %: Html.LabelFor(m => m.UserPwd) %>/td> 
 td> %: Html.PasswordFor(m => m.UserPwd) %>/td> 
 /tr> 
 
 tr> 
 td> %: Html.LabelFor(m => m.ConfirPwd) %>/td> 
 td> %: Html.PasswordFor(m => m.ConfirPwd)%>/td> 
 /tr> 
 
 tr> 
 td> %: Html.LabelFor(m => m.Email) %>/td> 
 td> %: Html.TextBoxFor(m => m.Email) %>/td> 
 /tr> 
 
 tr> 
 td> input type=submit value="提交" />/td> 
 td>/td> 
 /tr> 
 
 
 /table> 
 
 
 
 %Html.EndForm(); %> 
 
 /div> 
/body> 
/html> 

publicActionResult Register()
 {
 return View();
 }
 

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Data.SqlClient; 
using System.Data; 
 
namespace MvcLogin.Models 
{ 
 public class SqlHelper 
 { 
 //數(shù)據(jù)庫連接字符串 
 readonly string conStr = "server=.;uid=sa;pwd=123;database=cztest;Min Pool Size=10;"; 
 
 string strAdd = @"INSERT INTO dbo.UserInfo 
 ( UserName, UserPwd, Email ) 
VALUES ( '{0}', -- UserName - varchar(20) 
 '{1}', -- UserPwd - varchar(20) 
 '{2}' -- Email - varchar(50) 
 )"; 
 
 string strUserExist = @" SELECT * FROM dbo.UserInfo WHERE UserName='{0}' AND UserPwd='{1}'"; 
 
 /// summary> 
 /// 添加用戶 
 /// /summary> 
 /// param name="model">/param> 
 /// returns>/returns> 
 public bool AddUser(RegisterModel model) 
 { 
 strAdd = string.Format(strAdd, model.UserName, model.UserPwd, model.Email); 
 SqlConnection con = new SqlConnection(conStr); 
 con.Open(); 
 SqlCommand cmd = new SqlCommand(strAdd,con); 
 int o = cmd.ExecuteNonQuery(); 
 con.Close(); 
 if (o>0) 
 { 
 return true; 
 } 
 return false; 
 } 
 
 /// summary> 
 /// 判斷用戶是否存在 
 /// /summary> 
 /// param name="model">/param> 
 /// returns>/returns> 
 public bool ExistUser(RegisterModel model) 
 { 
 strUserExist = string.Format(strUserExist, model.UserName, model.UserPwd); 
 SqlConnection con = new SqlConnection(conStr); 
 con.Open(); 
 SqlCommand cmd = new SqlCommand(strUserExist, con); 
 SqlDataAdapter adp = new SqlDataAdapter(cmd); 
 DataSet ds = new DataSet(); 
 adp.Fill(ds); 
 con.Close(); 
 if (ds!=nullds.Tables[0].Rows.Count>0) 
 { 
 return true; 
 } 
 return false; 
 } 
 
 } 
} 

/// summary> 
 /// 注冊提交 
 /// /summary> 
 /// param name="model">/param> 
 /// returns>/returns> 
 [HttpPost] 
 public ActionResult Register(Models.RegisterModel model) 
 { 
 bool result = false; 
 if (!new Models.SqlHelper().ExistUser(model)) 
 { 
 result = new Models.SqlHelper().AddUser(model); 
 } 
 
 if (result) 
 { 
 //添加成功轉(zhuǎn)向主頁 
 FormsService.SignIn(model.UserName, false); 
 return RedirectToAction("index"); 
 } 
 else 
 { 
 //返回注冊頁面 
 ViewData["msg"] = "添加用戶失敗"; 
 return View(model); 
 } 
 }