Exam/SingleSelectManage.aspx.cs

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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 OnLineExam.BusinessLogicLayer;

public partial class Web_SingleSelectManage : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            InitDDLData();  //初始化考试科目          
        }
    }
    //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
        GridViewBind();//为GridView绑定数据
    }
    //显示选择科目的单选题
    protected void ddlCourse_SelectedIndexChanged(object sender, EventArgs e)
    {
        GridViewBind();//为GridView绑定数据
    }
    //GridView控件绑定数据事件
    protected void GridViewBind()
    {
        SingleProblem singleproblem = new SingleProblem();  //创建单选题对象
        DataSet ds = singleproblem.QuerySingleProblem(int.Parse(ddlCourse.SelectedValue));//根据考试科目查询单选题信息
        GridView1.DataSource = ds.Tables[0].DefaultView;    //为GridView控件指名数据源
        GridView1.DataBind();                               //绑定数据
    }
    //删除试题事件
    protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        SingleProblem singleproblem = new SingleProblem();  //创建单选题对象
        int ID = int.Parse(GridView1.DataKeys[e.RowIndex].Values[0].ToString()); //取出要删除记录的主键值
        if (singleproblem.DeleteByProc(ID))
        {
            Response.Write("<script language=javascript>alert('成功删除试题！')</script>");
        }
        else
        {
            Response.Write("<script language=javascript>alert('删除试题失败！')</script>");
        }
        GridView1.EditIndex = -1;
        GridViewBind();//重新绑定数据