guestbook.aspx.cs

一个手机电子商务网站 包含物品展示

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.IO;

namespace Guestbook
{
	/// <summary>
	/// WebForm1 的摘要说明。
	/// </summary>
	public class GuestBookForm : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.TextBox txtName;
		protected System.Web.UI.WebControls.Button btnSubmint;
		protected System.Web.UI.WebControls.Button btnClear;
		protected System.Web.UI.WebControls.Label Label2;
		protected System.Web.UI.WebControls.DataGrid dataGrid;
		protected System.Web.UI.WebControls.TextBox txtEmail;
		protected System.Web.UI.WebControls.Label Label3;
		protected System.Web.UI.WebControls.TextBox txtMessage;
		protected System.Web.UI.WebControls.Label Label4;
		protected System.Web.UI.WebControls.HyperLink HyperLink1;
		protected System.Data.DataView dataView;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			dataView = new DataView( new DataTable());
		}

		public void FillMessageTable()
		{
			DataTable table =dataView.Table;
			table.Columns.Add("Data");
			table.Columns.Add("First Name");
			table.Columns.Add("e-mail");
			table.Columns.Add("Message");

			//open guest book file for reading
			StreamReader reader = new StreamReader(
				Request.PhysicalApplicationPath + "guestbook.txt");

			char[] separator = { '\t' };

			//read in line from file
			string message = reader.ReadLine();

			while( message!=null)
			{
				//split the string int its four parts
				string[] parts = message.Split(separator);

				//load data into table 
				table.LoadDataRow( parts, true );

				//read in one line from file
				message = reader.ReadLine();
			}

			//update grid
			dataGrid.DataSource = table;

			dataGrid.DataBind();

			reader.Close();
		}//end method FillMessageTable

		#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.btnSubmint.Click += new System.EventHandler(this.btnSubmint_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void btnSubmint_Click(object sender, System.EventArgs e)
		{
			//open stream for appending to file
			StreamWriter guestbook;
			guestbook = new StreamWriter( Request.PhysicalApplicationPath +
				"guestbook.txt", true);

			//write new message to file
			guestbook.WriteLine(
				DateTime.Now.Date.ToString().Substring( 0, 10 ) +
				"\t" + txtName.Text + "\t" + txtEmail.Text 
				+ "\t" + txtMessage.Text );

			//clear textBoxes and close stream
			txtName.Text = "";
			txtEmail.Text = "";
			txtMessage.Text = "";
			guestbook.Close();
			this.FillMessageTable();
		}//end method submitButton_Click

		//clear all text boxes
		private void btnClear_Click(
			object sender, System.EventArgs e )
		{
			txtName.Text = "";
			txtEmail.Text = "";
			txtMessage.Text = "";
		}//end method btnClear_Click
			
	}//end class GuestBookForm
}//end namespace Guestbook