[Blazor] Analyzer should check that Element reference instances are only ever read within OnAfterRenderAsync

[javiercn]

You shouldn't be using ElementReference fields or properties elsewhere in the lifecycle of a component. Doing so might result in errors caused by accessing stale references or non existent ones.

[javiercn]

Comes as part of

There are a lot of people that #50819. What we need is guidance here. An authoritative answer of either this will always work or very bad idea. Either answer is fine, but let us know. Especially as, if it's a bad idea and will fail in the future, we're going to see a lot of web sites die on an update that does this.

#51275