admin_multiselectadd.aspx.cs

一个功能比较全的Asp.net在线考试系统源码

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using MyOnLineExam.BusinessLogicLayer;

public partial class Web_admin_MultiSelectAdd : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            InitDDLData();          //初始化考试科目下拉列表框          
            if (Request["ID"] != null)//如果是修改题目，初始化数据
            {
                InitData();
            }
        }
    }
    //初始化考试科目
    protected void InitDDLData()
    {
        Course course = new Course();       //创建考试科目对象
        DataSet ds = course.QueryCourse();  //查询考试科目信息
        ddlCourse.DataSource = ds;          //指名考试科目列表框数据源
        ddlCourse.DataTextField = "Name";   //DataTextField显示Name字段值
        ddlCourse.DataValueField = "ID";    //DataValueField显示ID字段值
        ddlCourse.DataBind();               //绑定数据
    }
    //初始化数据
    protected void InitData()
    {
        int multiProblemID = int.Parse(Request["ID"].ToString());  //取出传递过来的试题编号
        MultiProblem multiproblem = new MultiProblem();          //创建单选题对象
        if (multiproblem.LoadData(multiProblemID))                //如果取出题目信息，分别放在相应控件显示
        {
            ddlCourse.SelectedValue = multiproblem.CourseID.ToString();
            txtTitle.Text = multiproblem.Title;
            txtAnswerA.Text = multiproblem.AnswerA;
            txtAnswerB.Text = multiproblem.AnswerB;
            txtAnswerC.Text = multiproblem.AnswerC;
            txtAnswerD.Text = multiproblem.AnswerD;
            string answer = multiproblem.Answer;
            for (int i = 0; i < answer.Length; i++)
            {
                string item = answer[i].ToString();
                for (int j = 0; j < cblAnswer.Items.Count; j++)
                {
                    if (item == cblAnswer.Items[i].Text)
                    {
                        cblAnswer.Items[i].Selected = true;
                    }
                }
            }
        }
        else                //查询出错，给出提示
        {
            lblMessage.Text = "加载数据出错！";
        }
    }

    //添加或修改事件
    protected void imgBtnSave_Click(object sender, ImageClickEventArgs e)
    {
        if (Page.IsValid)
        {
            MultiProblem multiproblem = new MultiProblem();          //创建单选题对象
            multiproblem.CourseID = int.Parse(ddlCourse.SelectedValue);//为单选题对象各属性赋值
            multiproblem.Title = txtTitle.Text;
            multiproblem.AnswerA = txtAnswerA.Text;
            multiproblem.AnswerB = txtAnswerB.Text;
            multiproblem.AnswerC = txtAnswerC.Text;
            multiproblem.AnswerD = txtAnswerD.Text;
            string answer = "";
            for (int i = 0; i < cblAnswer.Items.Count; i++)
            {
                if (cblAnswer.Items[i].Selected)
                {
                    answer += cblAnswer.Items[i].Text;
                }
            }
            multiproblem.Answer = answer;
            if (Request["ID"] != null)                                  //如果是修改题目信息
            {
                multiproblem.ID = int.Parse(Request["ID"].ToString()); //取出试题主键
                if (multiproblem.UpdateByProc(int.Parse(Request["ID"].ToString())))//调用修改试题方法修改试题
                {
                    lblMessage.Text = "成功修改该多选题！";
                }
                else
                {
                    lblMessage.Text = "修改该多选题失败！";
                }
            }
            else                                                        //如果是添加试题
            {
                if (multiproblem.InsertByProc())                       //调用添加试题方法添加试题
                {
                    lblMessage.Text = "成功添加该多选题！";
                }
                else
                {
                    lblMessage.Text = "添加该多选题失败！";
                }
            }
        }
    }
}