Admin/UpdateQuestion.aspx.cs

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using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

using System.Data.Linq;

public partial class Admin_UpdateQuestion : System.Web.UI.Page
{
	int questionID = -1;
    protected void Page_Load(object sender, EventArgs e)
    {
		if(Request.Params["QuestionID"] != null)
		{
			questionID = Int32.Parse(Request.Params["QuestionID"].ToString());
		}		
		if(!Page.IsPostBack)
		{
			BindPageData(questionID);
		}
    }

	private void BindPageData(int questionID)
	{   ///创建ExamineDB数据库的数据上下文
		ExamineDBDataContext db = new ExamineDBDataContext(OnlineExamineSystem.ExamineDBConnectionString);
		///查询被显示的考题
		var query = from q in db.Question
					where q.ID == questionID
					select q;
		if(query.Count() > 0)
		{   ///获取考题，并显示
			Question curq = query.First();
			tbTitle.Text = curq.Title;
			tbScore.Text = curq.Score.Value.ToString();
			///显示正确的答案
			for(int i = 0; i < ddlAnswer.Items.Count; i++)
			{
				if(ddlAnswer.Items[i].Value == curq.Answer.Trim())
				{
					ddlAnswer.SelectedIndex = i;
					break;
				}
			}
			///查询考题的答案
			var queryA = from a in db.Answer
						 where a.QuestionID == questionID
						 select a;
			///判断考题答案的数量是否为4个
			if(queryA.Count() != 4) return;
			///显示每一个答案
			foreach(Answer aw in queryA)
			{