using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Linq;
using?System.Text;
using?System.Windows.Forms;

namespace?自行車租賃系統(tǒng)
{
????public?partial?class?Login?:?Form
????{
????????public?Login（）
????????{
????????????InitializeComponent（）;
????????????radioButton1.Checked?=?true;
????????????textBox1.Focus（）;
????????????this.StartPosition?=?FormStartPosition.CenterScreen;
????????}
????????public?static?string?userId;
????????private?void?button1_Click（object?sender?EventArgs?e）//登錄
????????{
????????????string?id?=?textBox1.Text.Trim（）;
????????????string?pwd?=?textBox2.Text.Trim（）;
????????????if?（id==““||pwd==““）
????????????{
????????????????MessageBox.Show（“用戶名或密碼不能為空“）;
????????????}
????????????else
????????????{
????????????????if?（radioButton1.Checked?==?true）//會(huì)員登錄
????????????????{
????????????????????string?s?=?string.Format（“select?*?from?會(huì)員表?where?賬號(hào)=‘{0}‘?and?密碼=‘{1}‘“?id?pwd）;
????????????????????DataTable?dt?=?SqlHelper.ExecuteDataTable（s）;
????????????????????if?（dt.Rows.Count?>?0）
????????????????????{
????????????????????????MessageBox.Show（“登錄成功“）;
????????????????????????userId?=?id;
????????????????????????會(huì)員?form?=?new?會(huì)員（）;
????????????????????????form.Show（）;
????????????????????????textBox1.Text?=?““;
????????????????????????textBox2.Text?=?““;?this.Hide（）;
????????????????????}
????????????????????else
????????????????????{
????????????????????????MessageBox.Show（“用戶名或密碼有誤“）;
????????????????????}
????????????????}
????????????????else?if?（radioButton2.Checked?==?true）//管理員登錄
????????????????{
????????????????????string?s?=?string.Format（“select?*?from?管理員表?where?登錄賬號(hào)=‘{0}‘?and?登錄密碼=‘{1}‘“?id?pwd）;
????????????????????DataTable?dt?=?SqlHelper.ExecuteDataTable（s）;
????????????????????if?（dt.Rows.Count?>?0）
????????????????????{
????????????????????????MessageBox.Show（“登錄成功“）;
????????????????????????userId?=?id;
????????????????????????管理員?form?=?new?管理員（）;
????????????????????????form.Show（）;
????????????????????????textBox1.Text?=?““;
????????????????????????textBox2.Text?=?““;?this.Hide（）;
????????????????????}
????????????????????else
????????????????????{
????????????????????????MessageBox.Show（“用戶名或密碼有誤“）;
????????????????????}
????????????????}
????????????????else?if?（radioButton3.Checked==true）
????????????????{
????????????????????string?s?=?string.Format（“select?*?from?超級(jí)管理員表?where?登錄賬號(hào)=‘{0}‘?and?登錄密碼=‘{1}‘“?id?pwd）;
????????????????????DataTable?dt?=?SqlHelper.ExecuteDataTable（s）;
????????????????????if?（dt.Rows.Count?>?0）
????????????????????{
????????????????????????MessageBox.Show（“登錄成功“）;
????????????????????????userId?=?id;
????????????????????????超級(jí)管理員?form?=?new?超級(jí)管理員（）;
????????????????????????form.Show（）;
????????????????????????textBox1.Text?=?““;
????????????????????????textBox2.Text?=?““;?this.Hide（）;
????????????????????}
???????????

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件????????3488??2016-06-22?16:05??51Aspx源碼必讀.txt
?????文件?????????226??2016-06-22?15:52??App.config
?????目錄???????????0??2016-06-22?15:49??DB_51aspx\
?????文件?????3145728??2016-06-22?16:06??DB_51aspx\Bike.mdf
?????文件?????1048576??2016-06-22?16:06??DB_51aspx\Bike_log.ldf
?????文件????????9539??2015-12-09?14:41??Login.Designer.cs
?????文件????????3592??2015-12-09?14:41??Login.cs
?????文件??????154790??2015-12-09?14:41??Login.resx
?????文件?????????503??2016-06-17?11:55??Program.cs
?????目錄???????????0??2016-06-22?15:48??Properties\
?????文件????????1384??2015-12-04?17:47??Properties\AssemblyInfo.cs
?????文件????????9334??2015-12-09?14:40??Properties\Resources.Designer.cs
?????文件???????12177??2015-12-09?14:40??Properties\Resources.resx
?????文件????????1108??2015-12-04?17:47??Properties\Settings.Designer.cs
?????文件?????????249??2015-12-04?17:47??Properties\Settings.settings
?????目錄???????????0??2016-06-22?15:48??Resources\
?????文件???????50570??2015-12-08?20:13??Resources\02453108.jpg
?????文件??????150072??2015-12-08?20:13??Resources\10513481_102216297195_2.jpg
?????文件??????143214??2015-12-08?20:13??Resources\1263764_214611095048_2.jpg
?????文件????????7932??2015-12-08?20:13??Resources\135183871123.jpg
?????文件???????12568??2015-12-08?20:13??Resources\14281675.jpg
?????文件???????59826??2015-12-08?20:13??Resources\20101221111217_big.jpg
?????文件??????157250??2015-12-08?20:13??Resources\20120605143641365.jpg
?????文件???????70240??2015-12-08?20:13??Resources\20140101173158640.jpg
?????文件??????148718??2015-12-08?20:13??Resources\201503030002321029.jpg
?????文件???????70785??2015-12-08?20:13??Resources\202615_zxc.jpg
?????文件???????56752??2015-12-08?20:13??Resources\221242_IMG_0080.jpg
?????文件???????57916??2015-12-08?20:13??Resources\221430_IMG_0078.jpg
?????文件???????26558??2015-12-08?20:13??Resources\34.jpg
?????文件??????104042??2015-12-08?20:13??Resources\53159-12040123205873.jpg
?????文件??????161025??2015-12-08?20:13??Resources\6022420_231625538000_2.jpg
............此處省略89個(gè)文件信息