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Guest Book Demo (C#)
<%@ Page language="c#" src="GuestBook.aspx.cs" AutoEventWireup="false" Inherits="GuestBook.GuestBook" %>
<HTML>
<body>
<form id="Form1" method="post" runat="server">
<P>
<asp:DataList id="GuestBookList" runat="server">
<SelectedItemStyle></SelectedItemStyle>
<ItemStyle></ItemStyle>
<FooterStyle></FooterStyle>
<ItemTemplate>
Left By:
<%# DataBinder.Eval(Container.DataItem, "Author") %>
<br>
<b>
<%# DataBinder.Eval(Container.DataItem, "Message") %>
</b>
<br>
Left On:
<%# DataBinder.Eval(Container.DataItem, "Submitted") %>
</ItemTemplate>
<HeaderStyle></HeaderStyle>
</asp:DataList>
</P>
<DIV style="WIDTH: 560px; POSITION: relative; HEIGHT: 248px" ms_positioning="GridLayout">
<asp:Label id="Label1" runat="server" Width="104px" Height="24px">Your Name:</asp:Label>
<asp:Label id="Label2" runat="server" Width="104px" Height="24px">Your Message:</asp:Label>
<asp:TextBox id="txtName" runat="server" Width="392px"></asp:TextBox>
<asp:TextBox id="txtMessage" runat="server" Width="392px" Height="154px" TextMode="MultiLine"></asp:TextBox>
<asp:Button id="cmdSubmit" runat="server" Width="104px" Text="Submit"></asp:Button></DIV>
</form>
</body>
</HTML>
<%--
using System;
using System.Collections;
using System.ruponentModel;
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>
/// Summary description for GuestBook.
/// </summary>
public class GuestBook : System.Web.UI.Page
{
protected System.Web.UI.WebControls.DataList GuestBookList;
protected System.Web.UI.WebControls.Label Label1;
protected System.Web.UI.WebControls.Label Label2;
protected System.Web.UI.WebControls.TextBox txtName;
protected System.Web.UI.WebControls.TextBox txtMessage;
protected System.Web.UI.WebControls.Button cmdSubmit;
private string guestBookName;
private void Page_Load(object sender, System.EventArgs e)
{
guestBookName = Server.MapPath("GuestBook");
if (!this.IsPostBack)
{
GuestBookList.DataSource = GetAllEntries();
GuestBookList.DataBind();
}
}
#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.cmdSubmit.Click += new System.EventHandler(this.cmdSubmit_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void cmdSubmit_Click(object sender, System.EventArgs e)
{
BookEntry newEntry = new BookEntry();
newEntry.Author = txtName.Text;
newEntry.Submitted = DateTime.Now;
newEntry.Message = txtMessage.Text;
SaveEntry(newEntry);
GuestBookList.DataSource = GetAllEntries();
GuestBookList.DataBind();
txtName.Text = "";
txtMessage.Text = "";
}
private ArrayList GetAllEntries()
{
ArrayList entries = new ArrayList();
DirectoryInfo guestBookDir = new DirectoryInfo(guestBookName);
foreach (FileInfo fileItem in guestBookDir.GetFiles()){
entries.Add(GetEntryFromFile(fileItem));
}
return entries;
}
private BookEntry GetEntryFromFile(FileInfo entryFile)
{
BookEntry newEntry = new BookEntry();
StreamReader r = entryFile.OpenText();
newEntry.Author = r.ReadLine();
newEntry.Submitted = DateTime.Parse(r.ReadLine());
newEntry.Message = r.ReadLine();
r.Close();
return newEntry;
}
private void SaveEntry(BookEntry entry)
{
string fileName = guestBookName + @"\";
fileName += DateTime.Now.Ticks.ToString();
FileInfo newFile = new FileInfo(fileName);
StreamWriter w = newFile.CreateText();
w.WriteLine(entry.Author);
w.WriteLine(entry.Submitted.ToString());
w.WriteLine(entry.Message);
w.Flush();
w.Close();
}
}
public class BookEntry
{
private string author;
private DateTime submitted;
private string message;
public string Author
{
get
{ return author; }
set
{ author = value; }
}
public DateTime Submitted
{
get
{ return submitted; }
set
{ submitted = value; }
}
public string Message
{
get
{ return message; }
set
{ message = value; }
}
}
}
--%>
