I am using manual upload, so have a button to initiate the upload. However, prior to uploading, I need to verify a set number of files have been selected for upload. So far this seems to work
but is delving into the internals of the control. Is there an approved method? getUploadedFiles() doesn't work, as the files haven't been uploaded yet.
var upload = $find('<%= radAsyncUpload.ClientID %>');
if ( upload._fileInput.files.length != required ) {
$(".filesRequiredMessage").show();
}