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Enhance Blazor OnAfterRender[Async] content (#19951)

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Luke Latham 2020-09-21 10:57:31 -05:00 committed by GitHub
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aspnetcore/blazor/components/lifecycle.md
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@ -135,7 +135,10 @@ protected override void OnAfterRender(bool firstRender)
}
```
<xref:Microsoft.AspNetCore.Components.ComponentBase.OnAfterRender%2A> and <xref:Microsoft.AspNetCore.Components.ComponentBase.OnAfterRenderAsync%2A> *aren't called when prerendering on the server.*
<xref:Microsoft.AspNetCore.Components.ComponentBase.OnAfterRender%2A> and <xref:Microsoft.AspNetCore.Components.ComponentBase.OnAfterRenderAsync%2A> *aren't called during the prerendering process on the server*. The methods are called when the component is rendered interactively after prerendering is finished. When the app prerenders:
1. The component executes on the server to produce some static HTML markup in the HTTP response. During this phase, <xref:Microsoft.AspNetCore.Components.ComponentBase.OnAfterRender%2A> and <xref:Microsoft.AspNetCore.Components.ComponentBase.OnAfterRenderAsync%2A> aren't called.
1. When `blazor.server.js` or `blazor.webassembly.js` start up in the browser, the component is restarted in an interactive rendering mode. After a component is restarted, <xref:Microsoft.AspNetCore.Components.ComponentBase.OnAfterRender%2A> and <xref:Microsoft.AspNetCore.Components.ComponentBase.OnAfterRenderAsync%2A> **are** called because the app isn't inside the prerendering phase any longer.
If any event handlers are set up, unhook them on disposal. For more information, see the [Component disposal with `IDisposable`](#component-disposal-with-idisposable) section.