Examine.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 System.Linq;
using System.Data.Linq;

public partial class Examine : System.Web.UI.Page
{
	int subjectID = -1;

    protected void Page_Load(object sender, EventArgs e)
    {
		if(Request.Params["SubjectID"] != null)
		{
			subjectID = Int32.Parse(Request.Params["SubjectID"].ToString());
		}
		if(!Page.IsPostBack)
		{
			BindPageData();
		}
    }

	private void BindPageData()
	{   ///创建ExamineDB数据库的数据上下文
		ExamineDBDataContext db = new ExamineDBDataContext(OnlineExamineSystem.ExamineDBConnectionString);
		///获取考题的考题信息
		var query = from q in db.Question
					where q.SubjectID == subjectID
					select q;
		///显示考题
		gvQuestion.DataSource = query;		
		gvQuestion.DataBind();
	}

	private void BindAnswerData(RadioButtonList rbl,int questionID)
	{   ///创建ExamineDB数据库的数据上下文
		ExamineDBDataContext db = new ExamineDBDataContext(OnlineExamineSystem.ExamineDBConnectionString);
		///获取考题的答案信息
		var query = from a in db.Answer
					where a.QuestionID == questionID
					select a;
		///绑定到指定的列表控件
		rbl.DataSource = query;
		rbl.DataTextField = "Body";
		rbl.DataValueField = "ID";
		rbl.DataBind();
	}

	protected void gvQuestion_RowDataBound(object sender,GridViewRowEventArgs e)
	{   ///显示题号
		Label lbIndex = (Label)e.Row.FindControl("lbIndex");
		if(lbIndex != null)