Asynchronous HTTP Upload

Demonstrates how to do an HTTP upload asynchronously in a background thread. The Chilkat Upload software is freeware and may be used in both commercial and non-commercial applications and websites.

The C# code to receive the upload at http://www.chilkatsoft.com/receiveUpload.aspx may be seen here: C# ASP.NET Code to Receive Upload

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Chilkat.Upload upload = new Chilkat.Upload();

//  Specify the page (ASP, ASP.NET, Perl, Python, Ruby, CGI, etc)
//  that will process the HTTP Upload.
upload.Hostname = "www.chilkatsoft.com";
upload.Path = "/receiveUpload.aspx";

//  Add one or more files to be uploaded.
upload.AddFileReference("file1","dude.gif");
upload.AddFileReference("file2","pigs.xml");
upload.AddFileReference("file3","sample.doc");

//  Begin the HTTP upload in a background thread:
bool success;
success = upload.BeginUpload();
if (success != true) {
    MessageBox.Show(upload.LastErrorText);
}
else {
    MessageBox.Show("Files uploaded!");
}

//  Wait for the upload to finish.
//  Print the progress as we wait...
while ((upload.UploadInProgress == true)) {
    //  We can abort the upload at any point by calling:
    //  upload.AbortUpload();

    //  Display the percentage complete and the number of bytes uploaded so far..
    //  The total upload size will become set after the upload begins:
    textBox1.Text += upload.PercentUploaded + "% "
         + upload.NumBytesSent + "/" + upload.TotalUploadSize + "\r\n";

    //  Sleep 2/10ths of a second.
    upload.SleepMs(200);

}

//  Did the upload succeed?
if (upload.UploadSuccess == true) {
    MessageBox.Show("Files uploaded!");
}
else {
    MessageBox.Show(upload.LastErrorText);
}