Do you need to upload a file to your php web server from a .NET application? I did, and I found that it was actually pretty easy. Basically the upload.php file works the same way as a basic HTML website form. You simply do an HTML form post from within your .NET application.

The source code for the VB.NET application:

Dim WC As New System.Net.WebClient

Dim uriString As String = “http://www.yourwebserver.com/upload.php”

Dim fileName As String = “c:\somefile.txt”

Dim responseArray As Byte() = WC.UploadFile(uriString, “POST”, fileName)

MsgBox(System.Text.Encoding.ASCII.GetString(responseArray))

The source code for the PHP upload.php script:

<?php

$uploaddir = "/home/webspace/htdocs/uploads/";

$uploadfile = $uploaddir . basename($_FILES['file']['name']);

if (move_uploaded_file($_FILES['file']['tmp_name'], $uploadfile)){

echo "File Uploaded!";

}else{

echo "Problem uploading file.";

}

?> 

Call the .NET code above to upload a file. Make sure you have a writable directory on your php web server. The application should throw a message box up with the results of upload.php. ( Basically whatever upload.php echo’s back. )