singleproblem.cs

一个极其强悍的在线考试系统,比较适合初学者

using System;
using System.Data;
using System.Collections;
using System.Data.SqlClient;
using MyOnLineExam.DataAccessLayer;
using MyOnLineExam.DataAccessHelper;


namespace MyOnLineExam.BusinessLogicLayer
{
    //单选题类
    public class SingleProblem
    {
        #region 私有成员
        private int _ID;                                               //题目编号
        private int _CourseID;                                         //所属科目        
        private string _Title;                                         //题目      
        private string _AnswerA;                                       //答案A
        private string _AnswerB;                                       //答案B
        private string _AnswerC;                                       //答案C
        private string _AnswerD;                                       //答案D
        private string _Answer;                                        //答案
       
        #endregion 私有成员

        #region 属性

        public int ID
        {
            set
            {
                this._ID = value;
            }
            get
            {
                return this._ID;
            }
        }
        public int CourseID
        {
            set
            {
                this._CourseID = value;
            }
            get
            {
                return this._CourseID;
            }
        }
        public string Title
        {
            set
            {
                this._Title = value;
            }
            get
            {
                return this._Title;
            }
        }
        public string AnswerA
        {
            set
            {
                this._AnswerA = value;
            }
            get
            {
                return this._AnswerA;
            }
        }       
        public string AnswerB
        {
            set
            {
                this._AnswerB = value;
            }
            get
            {
                return this._AnswerB;
            }
        }
        public string AnswerC
        {
            set
            {
                this._AnswerC = value;
            }
            get
            {
                return this._AnswerC;
            }
        }
        public string AnswerD
        {
            set
            {
                this._AnswerD = value;
            }
            get
            {
                return this._AnswerD;
            }
        }
        public string Answer
        {
            set
            {
                this._Answer = value;
            }
            get
            {
                return this._Answer;
            }
        }
        
        #endregion 属性

        #region 方法

        //根据题目ID 初始化题目
        //输入：
        //      TID - 题目编号；
        //输出：
        //      题目存在：返回True；
        //      题目不在：返回False；
        public bool LoadData(int TID)
        {
            SqlParameter[] Params = new SqlParameter[1];
            DataBase DB = new DataBase();

            Params[0] = DB.MakeInParam("@ID", SqlDbType.Int,4, TID);                  //用户编号            

            DataSet ds = DB.GetDataSet("Proc_SingleProblemDetail", Params);            
            ds.CaseSensitive = false;
            DataRow DR;
            if (ds.Tables[0].Rows.Count > 0)
            {
                DR= ds.Tables[0].Rows[0];
                this._CourseID = GetSafeData.ValidateDataRow_N(DR, "CourseID");                   //科目编号                
                this._Title = GetSafeData.ValidateDataRow_S(DR, "Title");                         //题目
                this._AnswerA = GetSafeData.ValidateDataRow_S(DR, "AnswerA");                     //答案A
                this._AnswerB = GetSafeData.ValidateDataRow_S(DR, "AnswerB");                     //答案B
                this._AnswerC = GetSafeData.ValidateDataRow_S(DR, "AnswerC");                     //答案C
                this._AnswerD = GetSafeData.ValidateDataRow_S(DR, "AnswerD");                     //答案D
                this._Answer = GetSafeData.ValidateDataRow_S(DR, "Answer");                       //答案
                return true;
            }
            else
            {
                return false;
            }           
        }        
         

        //向SingleProblem表中添加题目信息(采用存储过程)
        //输出：
        //      插入成功：返回True；
        //      插入失败：返回False；
        public bool InsertByProc()
        {
            SqlParameter[] Params = new SqlParameter[7];

            DataBase DB = new DataBase();

            Params[0] = DB.MakeInParam("@CourseID", SqlDbType.Int,4, CourseID);                 //科目编号
            Params[1] = DB.MakeInParam("@Title", SqlDbType.VarChar,1000, Title);                //题目            
            Params[2] = DB.MakeInParam("@AnswerA", SqlDbType.VarChar, 500, AnswerA);            //答案A
            Params[3] = DB.MakeInParam("@AnswerB", SqlDbType.VarChar, 500, AnswerB);            //答案B
            Params[4] = DB.MakeInParam("@AnswerC", SqlDbType.VarChar, 500, AnswerC);            //答案C
            Params[5] = DB.MakeInParam("@AnswerD", SqlDbType.VarChar, 500, AnswerD);            //答案D
            Params[6] = DB.MakeInParam("@Answer", SqlDbType.VarChar, 2, Answer);                //答案

            int Count = -1;
            Count = DB.RunProc("Proc_SingleProblemAdd", Params);
            if (Count > 0)
                return true;
            else return false;
        }

        //更新单选题试题信息
        public bool UpdateByProc(int TID)
        {
            SqlParameter[] Params = new SqlParameter[8];

            DataBase DB = new DataBase();

            Params[0] = DB.MakeInParam("@ID", SqlDbType.Int, 4, TID);                           //题目编号
            Params[1] = DB.MakeInParam("@CourseID", SqlDbType.Int, 4, CourseID);                //科目编号
            Params[2] = DB.MakeInParam("@Title", SqlDbType.VarChar, 1000, Title);               //题目            
            Params[3] = DB.MakeInParam("@AnswerA", SqlDbType.VarChar, 500, AnswerA);            //答案A
            Params[4] = DB.MakeInParam("@AnswerB", SqlDbType.VarChar, 500, AnswerB);            //答案B
            Params[5] = DB.MakeInParam("@AnswerC", SqlDbType.VarChar, 500, AnswerC);            //答案C
            Params[6] = DB.MakeInParam("@AnswerD", SqlDbType.VarChar, 500, AnswerD);            //答案D
            Params[7] = DB.MakeInParam("@Answer", SqlDbType.VarChar, 2, Answer);                //答案

            int Count = -1;
            Count = DB.RunProc("Proc_SingleProblemModify", Params);
            if (Count > 0)
                return true;
            else return false;
        }
       

        //删除题目
        //输入：
        //      TID - 题目编号；
        //输出：
        //      删除成功：返回True；
        //      删除失败：返回False；
        public bool DeleteByProc(int TID)
        {
            SqlParameter[] Params = new SqlParameter[1];

            DataBase DB = new DataBase();

            Params[0] = DB.MakeInParam("@ID", SqlDbType.Int,4, TID);               //题目编号          
            
            int Count = -1;
            Count = DB.RunProc("Proc_SingleProblemDelete", Params);
            if (Count > 0)
                return true;
            else return false;
        }
        
        //查询单选题        
        public DataSet QuerySingleProblem(int TCourseID)
        {
            SqlParameter[] Params = new SqlParameter[1];

            DataBase DB = new DataBase();

            Params[0] = DB.MakeInParam("@CourseID", SqlDbType.Int, 4, TCourseID);               //题目编号           
            return DB.GetDataSet("Proc_SingleProblemList",Params);
        }      

        #endregion 方法
    }
}