editmsg.aspx.cs

网上考试系统

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;
using System.Configuration;

namespace ClassOnline
{
	/// <summary>
	/// EditMsg 的摘要说明。
	/// </summary>
	public class EditMsg : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox txtTheme;
		protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator1;
		protected System.Web.UI.WebControls.TextBox txtContent;
		protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator2;
		protected System.Web.UI.WebControls.Label lblName;
		protected System.Web.UI.WebControls.Label lblDate;
		protected System.Web.UI.WebControls.Button btnOK;
		protected System.Web.UI.WebControls.Button btnReturn;
		string strSQL;
		public string strClid;
		SqlConnection objconn;
		SqlCommand objcmd;
        SqlDataReader dr;

	
		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(Session.Count==0) Page.Response.Redirect("default.aspx");
			else 
				if(Session["UserID"].ToString()=="") Page.Response.Redirect("default.aspx");
			
			
			objconn=new SqlConnection(ConfigurationSettings.AppSettings["connstr"]);
			objconn.Open();
			strSQL="select BUID,CManager1,CManager2,BCID from Board,ClassInfo where CID=(select BCID from Board where BID="+Page.Request["msgid"].ToString()+") and BID="+Page.Request["msgid"].ToString();
			objcmd=new SqlCommand(strSQL,objconn);
			dr=objcmd.ExecuteReader();
			//while(dr.Read())
			//{
			//	string a =dr[0].ToString();
			//	string b=dr[1].ToString();
			//	string c=dr[2].ToString();
			//	Response.Write(a+b+c);
			//	Response.End();
			//}
			while(dr.Read())
				if(!(Session["UserID"].ToString()==dr[0].ToString()|Session["UserID"].ToString()==dr[1].ToString()|Session["UserID"].ToString()==dr[2].ToString()))
				{
					strClid=dr["BCID"].ToString();
					dr.Close();
					objconn.Close();
					Page.Response.Redirect("board.aspx?CID="+strClid);					
				}
			dr.Close();

			strSQL="select BCID from board where BID="+Page.Request["msgid"].ToString();
			objcmd=new SqlCommand(strSQL,objconn);
			dr=objcmd.ExecuteReader();
			while(dr.Read())
				strClid=dr[0].ToString();
			dr.Close();
			


			strSQL="select BTheme,BCnt,BDate,UserName from Board,UserInfo where UserID=(select BUID from Board where BID="+Page.Request["msgid"].ToString();
			strSQL+=") and BID="+Page.Request["msgid"].ToString();	
			objcmd=new SqlCommand(strSQL,objconn);
			dr=objcmd.ExecuteReader();
			if(!Page.IsPostBack)
				while(dr.Read())
				{
					txtTheme.Text=dr[0].ToString();
					txtContent.Text=dr[1].ToString();
					lblName.Text=dr[3].ToString();
					lblDate.Text=dr[2].ToString();
				
				}
			dr.Close();
			objconn.Close();
		}

		#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.btnOK.Click += new System.EventHandler(this.btnOK_Click);
			this.btnReturn.Click += new System.EventHandler(this.btnReturn_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void btnOK_Click(object sender, System.EventArgs e)
		{
			objconn=new SqlConnection(ConfigurationSettings.AppSettings["connstr"]);
			objconn.Open();
			strSQL="Update Board SET BTheme='"+txtTheme.Text;
			strSQL+="',BCnt='"+txtContent.Text;
			strSQL+="',BEditer="+Session["UserID"].ToString();
			strSQL+=",BEdittime=getdate() where BID="+Page.Request["msgid"].ToString();
			
			objcmd=new SqlCommand(strSQL,objconn);
			objcmd.ExecuteNonQuery();
			objcmd.Dispose();

			
			objconn.Close();
			
			Page.Response.Redirect("board.aspx?CID="+strClid);
		}

		private void btnReturn_Click(object sender, System.EventArgs e)
		{
			Page.Response.Redirect("board.aspx?CID="+strClid);
		}
	}
}