OnClientProgressUpdating

Updated on Apr 20, 2026

The OnClientProgressUpdating occurs each time the inline progress indicator is being updated.

The event handler receives two parameters:

1. The instance of the RadAsyncUpload control firing the event.

2. An eventArgs parameter containing the following method:

• get_row - returns the row whose update indicator has been updated

• get_data - returns data object containing information regarding the progress. The data object contains the following properties:

• percent- returns the percentage of the uploaded file.

• fileSize - returns the file size in bytes.

• fileName - returns the name of the uploading file.

• uploadedBytes - returns the number of uploaded bytes.

ASPNET

<telerik:RadAsyncUpload RenderMode="Lightweight" runat="server" ID="RadAsyncUpload1" OnClientProgressUpdating="onClientFileUploading" MultipleFileSelection="Automatic"></telerik:RadAsyncUpload>

JavaScript

<script type="text/javascript">
	function onClientFileUploading(sender, args) {
		var data = args.get_data();
		var percents = data.percent;
		var fileSize = data.fileSize;
		var fileName = data.fileName;
		var uploadedBytes = data.uploadedBytes;
		alert("Uploading information: File name: "	+ fileName + ",	" + percents + "% completed,
		total size: " + fileSize + " , uploaded: bytes " + uploadedBytes + "." );
	}
</script>