Welcome to the JavaScript feedback portal. We’re happy you’re here! If you have feedback on how to improve the JavaScript, we’d love to hear it!>
Thanks for joining our community and helping improve Syncfusion products!
When I create a dropdowntree I see the 'value' option, but when I set it I get an error inside your code. If I set it myself after everything is loaded via javascript directly then it works but no way to set the initial value via your builder. The way I have it setup is a hack in my opinion, better to set it inside your tag helper itself.
https://ej2.syncfusion.com/aspnetcore/DropDownTree/DefaultFunctionalities#/material