Question about controls! (New to VS 2008, Not new to coding)

UploadControl.ascx:

<%@ Control Language="C#" AutoEventWireup="false" CodeBehind="UploadControl.ascx.cs" Inherits="UploadControl.UploadControlClass"%>

UploadControl.ascx.cs:

namespace UploadControl
{
using System;

using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;

public abstract class UploadControlClass : System.Web.UI.UserControl
{

    protected System.Web.UI.WebControls.FileUpload FileUpload1;
    protected System.Web.UI.WebControls.Button Button1;
    protected System.Web.UI.WebControls.Label Label1;

    private void Button1_Click(object sender, EventArgs e)
    {
        Response.Write("Clicked");
        if (FileUpload1.HasFile)
            try
            {
                FileUpload1.SaveAs("D:\\~Path~\\" + FileUpload1.FileName);  //Path to place file
                Label1.Text = "File name: " +
                     FileUpload1.PostedFile.FileName + "
" +
                     FileUpload1.PostedFile.ContentLength + " kb
" +
                     "Content type: " +
                     FileUpload1.PostedFile.ContentType;
            }
            catch (Exception ex)
            {
                Label1.Text = "ERROR: " + ex.Message.ToString();
            }
        else
        {
            Label1.Text = "You have not specified a file.";
        }
    }
    //End of Button1_Click Event************************************

}
}

Now, keep in mind, I dont get any parser errors, just a page cannot be displayed!