How to transfer files from one webserver to another webserver

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Introduction

This article describes about a common requirement of transferring files from one web server to another web server.

Background

When I was working in some project, there was a requirement where I had a web application (http://someserver/someapplication) from where I had to transfer the files to another web server (http://www.someotherserver/someotherapplication). So, I thought why should not I share the same with you all.

Using the code

Download the WebRequest project and WebRequestReceiver project. Install it in a convenient location, e.g.: c:\inetpub\wwwroot. The ZIP file contains both projects.

This article has two projects:

1. A main project which contains the code to upload/download files.
   1. To transfer/upload a file from one webserver to another webserver (frmUploadFile.aspx).
   2. To retrieve/download a file from the other webserver to the location machine (frmDownloadFile.aspx).
2. A Web Request Receiver project which will save the files that are posted to it.

The application makes use of the WebClient class provided in the .NET framework.

//

// For uploading the file

//

try
{ 
    WebClient oclient = new WebClient(); 
    byte[] responseArray = 
       oclient.UploadFile(txtURLToSend.Text,"POST",txtFileToSend.Text); 
    lblStatus.Text = 
       "Check the file at " + Encoding.ASCII.GetString(responseArray); 
} 
catch (Exception ex) 
{ 
    lblStatus.Text = ex.Message;
}

//

// For downloading the file

//

try
{
    WebClient oclient = new WebClient();
    oclient.DownloadFile(txtURL.Text,txtFileLocation.Text);
    lblStatus.Text = "Check the file at " + txtFileLocation.Text;
}
catch (Exception ex)
{
    lblStatus.Text = ex.Message;
}

When I say uploading the file from one web server to another web server, it basically posts the file from one web server to another web server like the way a file from the client side is posted when you use <input type="file">.

Points of Interest

This example is useful in places where you have to post files from one web server to another web server.