(.NET Core C#) Asynchronous HTTP Upload

Demonstrates how to do an HTTP upload asynchronously in a background thread.

A server-side C# example showing how to receive an upload is located at 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.mywebserver.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 = upload.BeginUpload();
if (success != true) {
    Debug.WriteLine(upload.LastErrorText);
}
else {
    Debug.WriteLine("Upload started...");
}

// 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:
    Debug.WriteLine(Convert.ToString((int) upload.PercentUploaded) + "% " + Convert.ToString((int) upload.NumBytesSent) + "/" + Convert.ToString((int) upload.TotalUploadSize));

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

}

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