ASP. net2.0 uploads images and creates corresponding folders for users (original)

// Front-endCode
<% @ Page Language = " C # " Autoeventwireup = " True " Codefile = " Test. aspx. CS " Inherits = " Test "   %>

<! 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 > No title page </ Title >

</ Head >
< Body >

< Form ID = " Form1 " Runat = " Server " >
< Div >
< ASP: fileupload ID = " Fileupload1 " Runat = " Server " Cssclass = " Input3 " Width = " 290px " /> & Nbsp; & Nbsp; & Nbsp; & Nbsp;
< ASP: button ID = " Button1 " Runat = " Server " Text = " Upload images and create folders " Onclick = " Button#click "   />
</ Div >
</ Form >
</ Body >
</ Html >

// Background code

Using System;
Using System. Data;
Using System. configuration;
Using System. Web;
Using System. Web. Security;
Using System. Web. UI;
Using System. Web. UI. webcontrols;
Using System. Web. UI. webcontrols. webparts;
Using System. Web. UI. htmlcontrols;
Using System. IO;


Public Partial Class Test: system. Web. UI. Page
{
Protected   Void Page_load ( Object Sender, eventargs E)
{

}
Protected   Void Button#click ( Object Sender, eventargs E)
{
String Uploadfilename, uploadfilelastname;
Uploadfilename = Fileupload1.postedfile. filename; // Original Local Location of the file
Uploadfilelastname = Uploadfilename. substring (uploadfilename. lastindexof ( " . " ) +   1 ); // Get the file extension
Random Rd =   New Random (); // Generate random number
Int Valationno =   10   + Rd. Next ( 99 ); // Generate random number
String Suiji = Valationno. tostring (); // Generate random number
String Uploadfiletime = Datetime. Now. tostring ( " Yyyymmddhhmmss " ) + Suiji; // Obtain the system time and add a random number to generate the name of the uploaded image.
String Newuploadfilename = Uploadfiletime +   " . "   + Uploadfilelastname; // Name of the uploaded Image

String Userdirectory =   " Testfile " ; // The name of the folder to be created. You can register an ID in actual use.
String Userpath = Server. mappath ( " Uploadfiles " ). Tostring () +   " \\ "   + Userdirectory +   " \\ "   +   " Productsimages " ;
If ( ! Directory. exists (userpath )) // Create a folder if the folder does not exist.
{
Directory. createdirectory (userpath );
}
Fileupload1.postedfile. saveas (newuploadpahtname ); // Upload the image as saved
String Suser_productsimageurl =   " Uploadfiles/ "   + Userdirectory +   " / "   +   " Productsimages/ "   + Newuploadfilename; // Obtain the virtual path of the server Image
// Response. Write (suser_productsimageurl );
}
}