questalter.aspx.cs

一款很好的在线考试系统的毕业设计

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

namespace OLTestS
{
	/// <summary>
	/// QuestAlter 的摘要说明。
	/// </summary>
	public class QuestAlter : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label Label2;
		protected System.Web.UI.WebControls.Label Label3;
		protected System.Web.UI.WebControls.Label Label4;
		protected System.Web.UI.WebControls.Label Label5;
		protected System.Web.UI.WebControls.Label Label6;
		protected System.Web.UI.WebControls.Label Label7;
		protected System.Web.UI.WebControls.TextBox TextBox1;
		protected System.Web.UI.WebControls.TextBox TextBox2;
		protected System.Web.UI.WebControls.TextBox TextBox3;
		protected System.Web.UI.WebControls.TextBox TextBox4;
		protected System.Web.UI.WebControls.TextBox TextBox5;
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.Button Button2;
		DataSet ds;
		protected System.Web.UI.WebControls.Label Label8;
		protected System.Web.UI.WebControls.TextBox TextBox6;
		protected System.Web.UI.WebControls.Label Label9;
		SqlDataAdapter da;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
			if (!Page.IsPostBack)
			{
				Label7.Text=(Convert.ToInt32(Session["Select"])+1).ToString();
				Label9.Text="";
				BindData();
				if ((Convert.ToInt32(Session["Select"])+1)<=ds.Tables[0].Rows.Count)
				{
					TextBox1.Text=ds.Tables[0].Rows[(Convert.ToInt32(Session["Select"]))]["Quest"].ToString();
					TextBox2.Text=ds.Tables[0].Rows[(Convert.ToInt32(Session["Select"]))]["A"].ToString();
					TextBox3.Text=ds.Tables[0].Rows[(Convert.ToInt32(Session["Select"]))]["B"].ToString();
					TextBox4.Text=ds.Tables[0].Rows[(Convert.ToInt32(Session["Select"]))]["C"].ToString();
					TextBox5.Text=ds.Tables[0].Rows[(Convert.ToInt32(Session["Select"]))]["D"].ToString();
					TextBox6.Text=ds.Tables[0].Rows[(Convert.ToInt32(Session["Select"]))]["Answer"].ToString();
				}
				else
				{
					TextBox1.Text="";
					TextBox2.Text="";
					TextBox3.Text="";
					TextBox4.Text="";
					TextBox5.Text="";
					TextBox6.Text="";
				}
			}
			else
			{
			}
		}

		#region Web 窗体设计器生成的代码
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Button2.Click += new System.EventHandler(this.Button2_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
		private void BindData()
		{
			string cn="server=.;uid=sa;database=nTest";
			da = new SqlDataAdapter("Select * from Question",cn);
			ds = new DataSet();
			da.Fill(ds);
		
		}

		private void Button1_Click(object sender, System.EventArgs e)
		{
			BindData();
			if ((Convert.ToInt32(Session["Select"])+1)<=ds.Tables[0].Rows.Count)
			{
				try
				{
			 
					DataRow targetRow=ds.Tables[0].Rows[(Convert.ToInt32(Session["Select"]))];
					SqlCommandBuilder scb=new SqlCommandBuilder(da);
					targetRow.BeginEdit();
					targetRow["Quest"]=TextBox1.Text;
					targetRow["A"]=TextBox2.Text;
					targetRow["B"]=TextBox3.Text;
					targetRow["C"]=TextBox4.Text;
					targetRow["D"]=TextBox5.Text;
					targetRow["Answer"]=TextBox6.Text;
					targetRow.EndEdit();
					da.Update(ds);
					ds.AcceptChanges();
					Label9.Text="修改成功!";
				}
				catch (Exception ex)
				{
					Label9.Text="修改失败!"+ex.Message;
				}
			}
			else
			{
				try
				{
					
					DataRow newRow=ds.Tables[0].NewRow();
					
					
					newRow["Num"]=Convert.ToInt32(Session["Select"])+1;
					newRow["Quest"]=TextBox1.Text;
					newRow["A"]=TextBox2.Text;
					newRow["B"]=TextBox3.Text;
					newRow["C"]=TextBox4.Text;
					newRow["D"]=TextBox5.Text;
					newRow["Answer"]=TextBox6.Text;

					SqlCommandBuilder scb=new SqlCommandBuilder(da);
					ds.Tables[0].Rows.Add(newRow);
					da.Update(ds);
					ds.AcceptChanges();

					Label9.Text="修改成功!";
				}
				catch (Exception ex)
				{
				  Label9.Text="修改失败!"+ex.Message;
				}
			}
		}

		private void Button2_Click(object sender, System.EventArgs e)
		{
			this.Response.Redirect("Quest.aspx");
		}
	}
}