computerdb.cs

学生学籍管理

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

namespace SchoolMIS.DataAccess.Student.SQLServer
{
    public class ComputerDB
    {
        /// <summary>
        /// 添加考试信息
        /// </summary>
        /// <param name="stuNum">学生学号</param>
        /// <param name="stuCardID">身份证号码</param>
        /// <param name="comType">考试等级</param>
        public bool Add(string stuNum, string stuCardID, string comType)
        {
            //建立数据库连接对象
            SqlConnection conn = new SqlConnection(Constants.ConnString);
            //建立数据库命令对象
            SqlCommand cmd = new SqlCommand();
            cmd.Connection = conn;
            cmd.CommandText = Constants.AddComTest;
            cmd.CommandType = CommandType.Text;

            //添加参数
            SqlParameter paramStuID = new SqlParameter("@stuID", stuNum);
            cmd.Parameters.Add(paramStuID);
            SqlParameter paramComType = new SqlParameter("@comType", comType);
            cmd.Parameters.Add(paramComType);
            SqlParameter paramStuCardID = new SqlParameter("@stuCardID", stuCardID);
            cmd.Parameters.Add(paramStuCardID);

            try
            {
                conn.Open();
                cmd.ExecuteNonQuery();
                conn.Close();

                return true;
            }
            catch (SqlException ex)
            {
                return false;
            }
            finally
            {
                //确保数据库连接被关闭
                if (conn.State == ConnectionState.Open)
                {
                    conn.Close();
                }
            }
        }

        /// <summary>
        /// 获取考生的报考历史
        /// </summary>
        /// <param name="stuNum">考生学号</param>
        /// <returns>报考历史</returns>
        public DataSet GetComputerHistory(string stuNum)
        {
            //建立数据库连接对象
            SqlConnection conn = new SqlConnection(Constants.ConnString);
            //建立数据库命令对象
            SqlCommand cmd = new SqlCommand();
            cmd.Connection = conn;
            cmd.CommandText = Constants.GetComputerHistory;
            cmd.CommandType = CommandType.Text;
            SqlParameter paramStuID = new SqlParameter("@stuID", stuNum);
            cmd.Parameters.Add(paramStuID);

            SqlDataAdapter dataAdapter = new SqlDataAdapter();
            dataAdapter.SelectCommand = cmd;

            DataSet computerHistory = new DataSet();

            try
            {
                dataAdapter.Fill(computerHistory, "computer");
                return computerHistory;
            }
            catch (SqlException ex)
            {
                return null;
            }
            finally
            {
                //确保数据库连接被关闭
                if (conn.State == ConnectionState.Open)
                {
                    conn.Close();
                }
            }
        }
    }
}