Hi Christian,

The ids of the tools in the FileManager Toolbar are defined with a guid. This is required in scenarios where, for example, there is another FileManager widget on the page. In such scenario, there will be multiple elements on the page with the same id, which is not recommended and might lead to undesired side effects.

I assume that you would like to get a reference to the 'Notify' button element and apply some dynamic behavior. In order to do that, I would suggest adding a unique class to the button and use it for getting the tool reference:

items.Add("notify")
  .HtmlAttributes(new { @class = "k-filemanager-notify-btn" })
  .Text("notify")
  .Command("NotifyCommand")
  .Icon("email")
  .Type("button")
  .Id("notify");

Taking the above into consideration, I will mark the item as "Declined" as changing this behavior might result in issues with the initialization of multiple widgets.

Regards,
Dimitar
Progress Telerik