• I want to track when the popup element of the DropDownButton is opened and closed.
• I also want to have an Open method via the component reference

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ADMIN EDIT

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For the time being, a possible option is to use the DropDownList component that exposes such events. Customize it so it can look and behave similarly to the DropDownButton.

Example implementation: https://blazorrepl.telerik.com/mekbkTPE21kwyMBU05.