Upload With Ease

Let users send files to your servers without third-party components or workarounds.

UI Tips

LANGUAGES: HTML

ASP.NET VERSIONS: 1.0 | 1.1

 

Upload With Ease

Let users send files to your servers without third-party components or workarounds.

 

By Brad McCabe

 

One challenge of Web development is uploading files to the Web server for processing and storage. ASP.NET now provides built-in file-upload support without any need for third-party components or workarounds.

 

The file-upload process is accessible via two different APIs - the Request.Files collection and the server control. Let's take a look at using the server control to upload a file.

 

Start a clean Web form and add this HTML to it:

 

 

  

       runat="server" ID="Form1">

   Select File To Upload:

   

       runat="server" NAME="UploadFile">

   

        Text="Upload">

  

 

 

Now add one line to the onClick event of the command button server control:

 

UploadFile.PostedFile.SaveAs("c:\upload.txt")

 

When this page is run you will see a basic page with two buttons (see Figure 1).

 


Figure 1. ASP.NET makes file uploads easy. The file-upload control creates the browse button automatically, letting a user navigate easily to a local file or path.

 

When the user clicks on the Upload button, the file listed in the textbox is uploaded to the server and is, in this example, saved as a file named upload.txt in the root of the server's C drive. Of course, in a real-world application, you want to pass in a name to the SaveAs function instead of using a hard-coded name and file extension.

 

Thanks to ASP.NET's built-in support for file uploading, you now can use this functionality in your applications with a few simple lines of code.

 

Got a UI question, tip, or idea for a topic you'd like me to cover? I'd love to hear it. E-mail me at [email protected].

 

Brad McCabe is the technical evangelist for Infragistics. Brad also has been a systems architect and consultant for Verizon Communications and many other clients, and he was a leading .NET evangelist within Ajilon Consulting. His primary interests include ASP.NET, Windows CE .NET, .NET Compact Framework, and Microsoft's networking technologies. E-mail him at [email protected].

 

 

 

 

Hide comments

Comments

  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Publish