Notes:
Web Page
<%@ Page Language="C#" Inherits="Registration" src="Registration.aspx.cs" %>
<html>
<head>
<title>Registration for the .NET seminar</title>
</head>
<body>
<h2>Use this page to register for the .NET seminar</h2>
<form method="post" Runat="server">
<table>
<tr>
<td>Name</td>
<td>
<asp:TextBox ID="name" Width="300" Runat="server"/>
</td>
</tr>
<tr>
<td>First Name</td>
<td>
<asp:TextBox ID="firstName" Width="300" Runat="server"/>
</td>
</tr>
<tr>
<td>Email</td>
<td>
<asp:TextBox ID="email" Width="300" Runat="server"/>
</td>
</tr>
<tr>
<td> </td>
<td>
<asp:CheckBox ID="workshop" Text="with workshop" Runat="server"/>
</td>
</tr>
<tr>
<td> </td>
<td>
<asp:RadioButton ID="programmer" Text="programmer" GroupName="job" Checked="true" Runat="server"/><br>
<asp:RadioButton ID="webDesigner" Text="web designer" GroupName="job" Runat="server"/><br>
<asp:RadioButton ID="manager" Text="manager" GroupName="job" Runat="server"/>
</td>
</tr>
</table>
<br>
<asp:Button ID="submit" Text="Register" OnClick="Register" Runat="server"/>
<br><br>
<asp:Label ID="message" ForeColor="Red" Text="" Runat="server"/>
</form>
</body>
</html>
Code Behind
using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Text;
public class Registration : Page {
protected TextBox name;
protected TextBox firstName;
protected TextBox email;
protected CheckBox workshop;
protected RadioButton programmer;
protected RadioButton webDesigner;
protected RadioButton manager;
protected Button submit;
protected Label message;
public void Register(object sender, EventArgs e) {
if (name.Text == "")
message.Text = "Please fill in all text fields";
else {
try {
FileStream s = new FileStream(Server.MapPath("registrations.txt"), FileMode.Append, FileAccess.Write);
StreamWriter w = new StreamWriter(s, Encoding.UTF8);
w.Write(name.Text + " " + firstName.Text + " " + email.Text);
if (workshop.Checked) w.Write(" +workshop");
if (programmer.Checked) w.Write(" programmer");
else if (webDesigner.Checked) w.Write(" designer");
else if (manager.Checked) w.Write(" manager");
w.WriteLine();
w.Flush();
s.Close();
message.Text = "Thank you for registering";
} catch (IOException) {
message.Text = "An error occurred while processing your request";
}
}
}
}