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高校网上教材征订系统的设计与实现(9)

来源：xiaoniu168.com 作者：本站原创添加时间：2012-04-17 点击数：23531

4.2.5 查询功能
查询是每个数据库软件必不可少的模块。它能方便数据、信息的查找。该系统中每类用户（除管理员）都存在查询功能。
（1）教师的查询：教师在征订书籍后，可单击查询表单，进入查询页面，根据课程名、教材名、ISBD号查询自己征订的所有书籍的内容。
（2）系主任的查询：教师在征订书籍后，系主任可以单击查询表单，进入查询页面，根据课程名、教材名、ISBD号查询该系主任所在系所有征订书籍的情况。
（3）教学秘书的查询。教师在征订书籍后，系主任通过审核后，教学秘书可以单击查询表单，进入查询页面，根据课程名、教材名、ISBD号查询该教学秘书所在系所有通过审核书籍的情况。
（4）教材科的查询。在所有征订工作结果后，教材科可以单击查询表单，进入查询页面，根据课程名、教材名、ISBD号查询所有老师征订书籍的结果。也可单击“统计表单”，在该表单中进行模糊查询。
具体代码如下：
private void getListforquery (int pageSize, int CurrentPage)
  {
   string sql="", sBook, sCourse, sIsbn, sUserName;
   sCourse= (string) Session ["QueryCourse"];
   sBook= (string) Session ["QueryBook"];
   sIsbn= (string) Session ["QueryIsbn"];
   sUserName= (string) Session ["QueryUserName"];
   if(iUsId>=5000)       //教材科只能查询所有已审核表单
sql+="Select c.user_name as '授课人',a,.ISBN as 'ISBN,号',a.book_name as '教材名',a. publisher as '出版社',a.pub_time as '出版时间',"+
"a.author_name as '作者',b.department_name as '所属院系',d.book_type_name as '教材类型',a.bar_cord as '条形码',a. approve as '审核',a.student_count as '学生数',"+
"a.student_class as '班级',a.approver_ID as '审核人',a.course_name as '课程名' From book_order_table a,department_type b,user_info_table c,book_type_table d where a.book_type=d.book_type and a.user_ID=c.user_ID and a.department=b.department_number "+" and a. approve='已审核'";
   else if(iUsId>=4000)      //系秘书查询本系审核表单
sql+="Select c.user_name as '授课人',a.ISBN as 'ISBN号',a.book_name as '教材名',a. publisher as '出版社',a.pub_time as '出版时间',"+
"a.author_name as '作者',b.department_name as '所属院系',d.book_type_name as '教材类型',a.bar_cord as '条形码',a. approve as '审核',a.student_count as '学生数',"+
"a.student_class as '班级',a.approver_ID as '审核人ID',a.course_name as '课程名' "+" From book_order_table a,department_type b,user_info_table c,book_type_table d where a. approve='已审核' and a.book_type=d.book_type and a.user_ID=c.user_ID and a.department=b.department_number and c.department=b.department_number ";
   else if(iUsId>=3000)      //系主任查询本系所有表单
sql+="Select c.user_name as '授课人',a.ISBN as 'ISBN号',a.book_name as '教材名',a. publisher as '出版社',a.pub_time as '出版时间',"+
"a.author_name as '作者',b.department_name as '所属院系',d.book_type_name as '教材类型',a.bar_cord as '条形码',a. approve as '审核',a.student_count as '学生数',"+
"a.student_class as '班级',a.approver_ID as '审核人ID',a.course_name
as '课程名' "+
"From book_order_table a, department_type b, user_info_table c, book_type_table d where a.book_type=d.book_type and a.user_ID=c.user_ID and a.department=b.department_number and c.department=b.department_number ";
   else if(iUsId>=2000)      //教师查询自己表单
sql+="Select c.user_name as '授课人',a.ISBN as 'ISBN号',a.book_name as '教材名',a. publisher as '出版社',a.pub_time as '出版时间',"+
"a.author_name as '作者',b.department_name as '所属院系',d.book_type_name as '教材类型',a.bar_cord as '条形码',a. approve as '审核',a.student_count as '学生数',"+
"a.student_class as '班级',a.approver_ID as '审核人',course_name as '课程名' "+" From book_order_table a,department_type b,user_info_table c,book_type_table d where a.book_type=d.book_type and