This is the expected behavior of the RadUpload, and it is experienced when the uploaded file's size is bigger than the max size enabled in the FileExplorer. The files remains visible (with a red dot in front of it), but the upload button is disabled, because actually the file is rejected and cannot be uploaded.
In order to configure the max allowed upload size, you have to set the desired value to the RadFileExplorer's configuration's MaxUploadFileSize
Additionally, if you want to enable the uploading of files, with size bigger than 4MB
, you have to made the corresponding configurations in the web.config
. You can take a look at this help article
for reference on what steps to take in order to allow for large files uploads.
the Telerik team
If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed