BLL/ResourceManage.cs

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using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using DAL;
namespace BLL
{
    public class ResourceManage
    {
        public DbOperator db;
        public ResourceManage()
        {
            db = new DbOperator(DBcommon.dbType, DBcommon.connString);
        }
        public int add(string classroomID, string ClassName, string ClassroomType, int Department)
        {
            string sql = "insert into ClassRoomInfo(ClassroomID,ClassName,ClassroomTypeID,DepartmentID)values('" + classroomID + "','" + ClassName + "','" + ClassroomType + "'," + Department + ")";
            int result = db.ExecuteNonQuery(sql);
            return result;
        }
        public DataTable selectAll()
        {
            string sql = "select a.ClassroomID,a.ClassName,b.ClassroomTypeName,c.DepartmentName from ClassRoomInfo as a inner join ClassRoomTypeInfo as b  on a.ClassRoomTypeID=b.ClassRoomTypeID inner join DepartmentInfo as c on a.DepartmentID=c.DepartmentID where 1=1";
            return db.ExecuteQuery(sql);

        }
        public int update(string classroomID, string ClassName, string ClassroomType, int Department)
        {
            string sql = "update ClassRoomInfo set ClassroomID='" + classroomID + "',ClassName='" + ClassName + "' ,ClassroomTypeID='" + ClassroomType + "',DepartmentID=" + Department + "where ClassroomID='" + classroomID + "' ";
            int result = db.ExecuteNonQuery(sql);
            return result;
        }
        public DataTable selectBycondition(string classroomID, string ClassName, string ClassroomType, int Department)
        {
            string sql = "select a.ClassroomID,a.ClassName,b.ClassroomTypeName,c.DepartmentName from ClassRoomInfo as a inner join ClassRoomTypeInfo as b  on a.ClassRoomTypeID=b.ClassRoomTypeID inner join DepartmentInfo as c on a.DepartmentID=c.DepartmentID where 1=1";
            if (classroomID.Length > 0)
            {
                sql += "and ClassroomID like '%" + classroomID + "%'";
            }
            if (ClassName.Length > 0)
            {
                sql += "and a.ClassName ='" + ClassName + "'";
            }
            if (!ClassroomType.Equals("请选择教室类型"))
            {
                sql += "and a.ClassroomTypeID ='" + ClassroomType + "'";
            }
            if (!Department.Equals("请选择系别"))
            {
                sql += "and a.DepartmentID =" + Department + "";
            }
            return db.ExecuteQuery(sql);
        }
        public int delete(string id)
        {
            string sql = "delete from ClassRoomInfo where ClassroomID='" + id + "'";
            int result = db.ExecuteNonQuery(sql);
            return result;
        }
    }