Why is my ASP.NET Application only showing a directory listing when I try to run it?

I opened Visual Studio 2012 Express for Web on my Windows 7 machine. I created an ASP.NET Empty Web Application named "EduPortal". I added a Web User Control to the project. In this User Control I put a button and a textbox and a button in a form. This is the code I used:

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="WebUserControl1.ascx.cs" Inherits="EduPortal.WebUserControl1" %><form runat="server"><asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br /><asp:Button ID="Button1" runat="server" Text="Button" /></form>

I then built and ran the program. I got an error page from IIS Express, which instructed me to run these two commands on a command prompt in the IIS Express Install Directory:

appcmd set config /section:system.webServer/directoryBrowse /enabled:true
appcmd set config ["SITE_NAME"] /section:system.webServer/directoryBrowse /enabled:true

The first command ran without error. The second command, however, gave this message:

ERROR ( message:Cannot find SITE object with identifier "[SITE_NAME]". )

Anyway, I ignored the error. I rebuilt my project in Visual Studio. Now when I run the project I get this page:

Why is this happening, and what steps can I take to fix it?