shownews.aspx.cs

用ASP.NET（C#）、SQL Server2000数据库开发在线考试系统源代码

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 ExamineSystem
{
	/// <summary>
	/// Summary description for ShowNews.
	/// </summary>
	public class ShowNews : System.Web.UI.Page
	{
		private int nNewsID = 0;
		public string sTitle  = "";
		public string sBody   = "";
		private string operation = "";

		private void Page_Load(object sender, System.EventArgs e)
		{
			if(Request.Params["NewsID"] != null)
			{
				nNewsID = Int32.Parse(Request.Params["NewsID"].ToString());
			}
			if(Request.Params["Operation"] != null)
			{
				operation = Request.Params["Operation"].ToString();
			}
			if(!Page.IsPostBack)
			{
				///预览新闻
				if(operation.ToLower() == "preview")
				{
					PreviewNews();
				}
				else
				{
					///显示新闻
					if(nNewsID > 0)
					{
						BindNewsData(nNewsID);
					}
				}
			}
		}

		private void PreviewNews()
		{
			if(Session[Session.SessionID + "PreviewNews"] != null)
			{
				PreviewNewsDetails newsDetails = (PreviewNewsDetails)Session[Session.SessionID + "PreviewNews"];
				sTitle = newsDetails.Title;
				sBody  = newsDetails.Body;
			}
		}

		private void BindNewsData(int nNewsID)
		{
			SqlConnection myConnection = new SqlConnection(DataBaseDB.ConnectionString);
			String cmdText = "SELECT * FROM News WHERE NewsID = '" + nNewsID.ToString() + "'";
			SqlCommand myCommand = new SqlCommand(cmdText,myConnection);
			myConnection.Open();
			SqlDataReader recn = myCommand.ExecuteReader(CommandBehavior.CloseConnection);
			while(recn.Read())
			{
				sTitle = recn["Title"].ToString();
				sBody  = recn["Body"].ToString();
			}
			recn.Close();
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
	}
}