Setting a property and using it to filter data

Radzen Studio Blazor WebAssembly
1

Hi,
I am trying to use a drop-down list to select and id and use this to filter a grid, but it does not work.
Here is where I create the property on the page load:

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image2426×1175 195 KB

Then, when the user changes the value, I need to set my selectedTeacher property to the selected id (this is the change event in my drop-down list control):
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image1916×655 44 KB

The drop-down is populated by a stored procedure, which is working fine:
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image1458×1003 51.9 KB

But when I change the value, I get this error message:
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image1828×233 25.4 KB

I am currently re-creating an Radzen angular application where this is working fine, but no such luck with a Radzen Blazor webassembly application. This is probably me not understanding types properly.
Any help would be appreciated.
Thanks!

2

Unlike Angular DropDown Change event in Blazor will provide directly the value not the entire object, check the exception for reference.

3

Thanks enchev, it now works correctly.