Question

I am sending POST data to PHP webpage from my windows app using VB.net. The code is as follows:

Dim data As String = "this is a test data push"
Dim wc As New WebClient
wc.Headers(HttpRequestHeader.ContentType) = "application/x-www-form-urlencoded"
wc.UploadStringAsync(uri, data)

The data gets stored. In the PHP page, I am sending an XML response back to the phone

header('Content-type: text/xml');
        echo '';
        echo '<count>';
                      echo '<',$i,'>'
        echo '</count>';
        echo '';

How do I use WebClient to read the RESPONSE back? Any help would be appreciated. Thanks alot.

Answer 1

You need to subscribe to the UploadStringCompleted event. See http://msdn.microsoft.com/en-us/library/ms144239.aspx for more details, but here is an excerpt:

This method sends a string to a resource. The string is sent
asynchronously using thread resources that are automatically allocated
from the thread pool. Before uploading the string, this method
converts it to a Byte array using the encoding specified in the
Encoding property. To receive notification when the string upload
completes, you can add an event handler to the UploadStringCompleted
event.

Drilling farther in, you can see that even returns a UploadStringCompletedEventArgs object that includes the results via the Result property. See http://msdn.microsoft.com/en-us/library/system.net.uploadstringcompletedeventargs.aspx for more details.