Very simple Silverlight File Upload example

Question

I'm looking for a very example file upload code snipplet/solution in Silverlight. Having done search I've found numerous controls/projects but all of them were quite complex; supporting multiple file upload, file upload progress, image re-sampling and lots of classes.

I'm looking for the simplest possible scenario with short, clean and easy to understand code.

Answer 1

This code is pretty short and (hopefully) easy to understand:

private Stream _data;
private string uploadUri;
private void Upload_Click(object sender, RoutedEventArgs e)
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.Multiselect = false;
dlg.Filter = "All files (*.*)|*.*";
bool? retVal = dlg.ShowDialog();

if (retVal != null && retVal==true)
{    
    _data = dlg.File.OpenRead();
    UploadFile();
}
}

private void UploadFile()
{
FileStream _data; // The file stream to be read
string uploadUri;

byte[] fileContent = new byte[_data.Length]; // Read the contents of the stream into a byte array
_data.Read(fileContent, 0, _data.Length);

WebClient wc = new WebClient();
wc.OpenWriteCompleted += new OpenWriteCompletedEventHandler(wc_OpenWriteCompleted);
Uri u = new Uri(uploadUri);
wc.OpenWriteAsync(u, null, fileContent); // Upload the file to the server
}

void wc_OpenWriteCompleted(object sender, OpenWriteCompletedEventArgs e) // The upload completed
{
if (e.Error == null)
{
  // Upload completed without error
}

For a complete downloadable solution see this post: File Upload in Silverlight - a Simple Solution