using?System;
using?System.Collections.Generic;
using?System.Linq;
using?System.Text;
using?System.Data;
using?System.Data.SqlClient;
using?System.Collections;

namespace?StudentManagement
{
????
}

public?class?DBHelper
{
????//SHOO:定義全局變量
????public?static?string?strLoginName?=?““;?//登錄用戶名
????public?static?string?conStr?=?“Server=127.0.0.1;User?ID=sa;Pwd=0077;Database=StudentManagement“;?//庫連接腳本
????public?static?string?strRowValue?=?““;?//獲取行中某值
????public?static?DataTable?dt;

????//SHOO:庫操作_cmd執(zhí)行并返回結果
????public?static?bool?ExecuteSql（string?sql）
????{
????????bool?ReturnResult?=?false;
????????SqlConnection?conn?=?new?SqlConnection（conStr）;
????????if?（conn.State?==?ConnectionState.Closed）
????????????conn.Open（）;
????????SqlCommand?cmd?=?new?SqlCommand（s

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2019-12-31?12:52??Database\
?????文件?????3145728??2019-12-31?12:52??Database\StudentManagement.mdf
?????文件???????30770??2019-12-31?12:51??Database\StudentManagement.sql
?????文件?????1858048??2019-12-31?10:33??Database\StudentManagementDB.BAK
?????文件?????6422528??2019-12-31?12:52??Database\StudentManagement_log.ldf
?????目錄???????????0??2019-12-31?12:48??StudentManagement\
?????文件?????????525??2019-12-31?09:06??StudentManagement\App.config
?????文件????????3304??2019-12-30?21:16??StudentManagement\DBHelp.cs
?????文件????????3132??2019-12-29?23:39??StudentManagement\FormAbout.Designer.cs
?????文件?????????373??2019-12-29?23:39??StudentManagement\FormAbout.cs
?????文件????????5817??2019-12-29?23:39??StudentManagement\FormAbout.resx
?????文件????????9351??2019-12-29?23:39??StudentManagement\FormConfig.Designer.cs
?????文件????????1725??2019-12-29?23:39??StudentManagement\FormConfig.cs
?????文件????????5817??2019-12-29?23:39??StudentManagement\FormConfig.resx
?????文件????????8588??2019-12-29?23:40??StudentManagement\FormCourse.Designer.cs
?????文件????????2309??2019-12-29?23:40??StudentManagement\FormCourse.cs
?????文件????????5817??2019-12-29?23:40??StudentManagement\FormCourse.resx
?????文件????????8601??2019-12-29?23:40??StudentManagement\FormCourseEdit.Designer.cs
?????文件????????2317??2019-12-29?23:40??StudentManagement\FormCourseEdit.cs
?????文件????????5817??2019-12-29?23:40??StudentManagement\FormCourseEdit.resx
?????文件???????13376??2019-12-30?14:40??StudentManagement\FormLogin.Designer.cs
?????文件????????2897??2019-12-30?14:40??StudentManagement\FormLogin.cs
?????文件????????9817??2019-12-30?14:40??StudentManagement\FormLogin.resx
?????文件??????114158??2019-12-31?10:24??StudentManagement\FormMain.Designer.cs
?????文件???????22396??2019-12-31?10:24??StudentManagement\FormMain.cs
?????文件???????16190??2019-12-31?10:24??StudentManagement\FormMain.resx
?????文件????????5555??2019-12-29?23:58??StudentManagement\FormMajor.Designer.cs
?????文件????????2045??2019-12-29?23:58??StudentManagement\FormMajor.cs
?????文件????????5817??2019-12-29?23:58??StudentManagement\FormMajor.resx
?????文件????????5853??2019-12-29?23:58??StudentManagement\FormMajorEdit.Designer.cs
?????文件????????1721??2019-12-29?23:58??StudentManagement\FormMajorEdit.cs
............此處省略88個文件信息