Why @ref or ElementReference always has a value after first set value into it and when it does not rendered throw an exception? about aspnetcore

[javiercn]

@NaserParhizkar thanks for contacting us.

Element references are values and we only set them when the element renders. If the element doesn't render, we don't set it to a default value again.

That's something your app needs to do if its conditionally rendering the element, otherwise we would need to reset all the elements on every render which would incur on a perf-hit.

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[NaserParhizkar]

I think prevent to raise an exception is better than to have much attention on perf-hit and consequently loose the reliability.