Thanks for the reply, but that doesn't really answer my question. I have an existing page with multiple UpdatePanels and .NET controls. For example:
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All I want to do is replace the DropDownList with Syncfusions Generic dropdown and have the page maintain the same AJAX functionality that I had before. So I modified the code as follows:
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The problem I encounted was when I made this change, instead of getting a partial redraw of the page on the NodeSelected event, I got a full postback and page refresh. So what I want to know is, can I accomplish what I want using only the ASP.NET UpdatePanel, or do I have to convert all my AJAX controls to Syncfusion?