Upload multiple files simultaneously with configurable concurrency. Three parallel upload
slots allow faster overall completion while limiting server load.
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<au:AjaxFileUpload ID="Uploader1" runat="server"
AllowMultiple="true"
ConcurrentUploads="3"
AutoUpload="true"
ShowProgress="true" />
// JavaScript API approach
AjaxUploader.create('#uploader', {
uploadUrl: '/ajaxupload.axd/upload',
multiple: true,
maxFiles: 10,
concurrency: 3, // 3 parallel upload slots
autoUpload: true,
onQueueRender: function(queue) {
// Show active uploads in parallel slots
}
});