The RadCloudUpload control exposes the AutoStart property. Its type is bool and it can be used to customize the behavior of the control when new files are selected. It can be get or set to indicate if selected files will be automatically uploaded right after the selection. The default value of this property is false and newly selected files will not be started automatically for upload, the user will need to click the Upload button. When you set the value of the property to true, all newly added files will automatically start uploading.
If the property is set to true and an upload fails, it will not be automatically retried. The user will have to click the Upload button.