Untitled

g System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Uploadfile : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    }
    protected void btnUpload_Click(object sender, EventArgs e)
    {
        fuSample.SaveAs(Server.MapPath("Files") + "//" + fuSample.FileName);
        lblMessage.Text = "File Successfully Uploaded";
    }

    protected void Button1_Click(object sender, EventArgs e)
    {

    }
}


<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Uploadfile" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
        <title>File Upload Control</title>
    </head>
    <body>
        <form id="form1" runat="server">
        <div>
        <asp:FileUpload  runat="server" ID="fuSample" />
        <asp:Button  runat="server" ID="btnUpload" Text="Upload"
                onclick="btnUpload_Click" />
                <asp:Label runat="server" ID="lblMessage" Text=""></asp:Label>
        </div>
            <p>
                <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
            </p>
        </form>
    </body>
    </html>