专题图
编号:ylbtechASPNET
ver1.0 QQ多账号登录。两种账号形式,1,数字;2,邮箱。
3.1 /App_Data/basic-sql.sql
-- =============================================
-- 多账号登录
-- author:YUANBO
-- development time:2011-9-20
-- =============================================
USE master
GO
-- Drop the database if it already exists
IF EXISTS (
SELECT name
FROM sys.databases
WHERE name = N'Duo'
)
DROP DATABASE Duo
GO
CREATE DATABASE Duo
GO
use Duo
go
-- =============================================
-- 用户
-- =============================================
create table Users
(
UserID int identity(2000,1) primary key, --编号
Email varchar(200), --邮箱
Username varchar(20) not null, --昵称
Userpass varchar(20) not null --密码
)
go
select UserID,Email,Username,Userpass from Users;
3.2 /App_Data/Select/1, Users.sql
Use Duo
go
-- =============================================
-- 多用户表的操作
-- =============================================
go
--注册
----a)QQ号码
insert Users(Username,Userpass) values('ylb','123');
select @@IDENTITY;
go
----b)Email帐号
--先判断该Email帐号,是否被注册
select COUNT(*) from Users where Email='ylb@qq.com';
----1)有,则提示:该帐号已存在,请换其他帐号
----2)无,则进行注册
insert Users(Email,Username,Userpass) values('ylb@qq.com','yb','123');
select @@IDENTITY;
go
--登录
---P:如何去判断用户输入的帐号是QQ号码或者是Email帐号
---A:第一方法,int.TryParse 尝试这去强转为整型
---A:第二种方法,看账号中是否存在'.'或者'@'
go
--QQ号码
select COUNT(*) from Users where UserID='2000' and Userpass='123';
go
--Email帐号
select COUNT(*) from Users where Email='ylb@qq.com' and Userpass='123';
--select * from Users;
4.1,

4.2,

4.3,

4.4,

解决方案属性图

5.1 /Signin.aspx.cs
using System;
public partial class Signin : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
//登录
int userID;
if (int.TryParse(txtID.Text, out userID))
{
//QQ号码登录
if (UsersOper.ExistsUserQQ(userID, txtUserpass.Text))
{
lblState.Text = "登陆成功!";
}
else
{
lblState.Text = "用户名或密码有误!";
}
}
else
{
//Email帐号登录
if (UsersOper.ExistsUserEmail(txtID.Text, txtUserpass.Text))
{
lblState.Text = "登陆成功!";
}
else
{
lblState.Text = "用户名或密码有误!";
}
}
}
}
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请单击“ver1.0 QQ多账号登录”
本文转自ylbtech博客园博客,原文链接:http://www.cnblogs.com/ylbtech/archive/2012/09/06/2673834.html,如需转载请自行联系原作者