GuestBook Example Source Code

GuestBook Example, source code file guestbook.aspx

<%@ Page Language="C#" %>
<%@ Import Namespace="System.IO" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

public void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        StreamReader sr = new StreamReader(path);
        litComments.Text = sr.ReadToEnd();
        sr.Close();
    }
}

public void btnSubmit_Click(object sender, EventArgs e)
{
    StreamWriter sw = File.AppendText(path);
    string entry = txtName.Text + " " +
        DateTime.Now.ToString() + "\n" +
        txtComment.Text + "\n";
    sw.WriteLine(entry);
    sw.Close();

StreamReader sr = new StreamReader(path);
    litComments.Text = sr.ReadToEnd();
    sr.Close();
}

public void btnClear_Click(object sender, EventArgs e)
{
    StreamWriter sw = new StreamWriter(path);
    sw.WriteLine();
    sw.Close();
    litComments.Text = "";
}
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>GuestBook Example</title>
    <link href="../examples.css" rel="stylesheet" type="text/css" />
</head>
<body>

<h2>GuestBook Example</h2>
<form id="form1" runat="server">
<p>
Name<br />
<asp:TextBox ID="txtName" runat="server" Width="300px" />
</p>

<p>
Comment<br />
<asp:TextBox ID="txtComment" runat="server" 
             TextMode="MultiLine" Rows="10" 
             Width="300px" />
</p>

</body>
</html>