Aspnetcore.docs: 3.1: Partial class support for Razor components

[Rick-Anderson]

See https://devblogs.microsoft.com/aspnet/asp-net-core-updates-in-net-core-3-1-preview-1/

Add a section for Partial class support for Razor components That I can point to in the what's new in 3.1 guide.

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Document Details

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• ID: be4c4d0c-149c-bde1-c7fa-f082916390ca
• Version Independent ID: 9d945996-ad02-bd4b-58ea-c465cc5cc74c
• Content: Create and use ASP.NET Core Razor components
• Content Source: aspnetcore/blazor/components.md
• Product: aspnet-core
• Technology: aspnetcore-blazor
• GitHub Login: @guardrex
• Microsoft Alias: riande

[Rick-Anderson]

@guardrex any chance you could get this done by noon your time tomorrow?

[guardrex]

This one? ...

https://docs.microsoft.com/en-us/aspnet/core/blazor/components?view=aspnetcore-3.1#partial-class-support

[guardrex]

I'm pretty sure that I can get that done by noon tomorrow. :smile: lol

[Rick-Anderson]

That was fast!

[Rick-Anderson]

@guardrex can you provide a link for
Pass parameters to top-level components
Blazor Server apps can now pass parameters to top-level components during the initial render. Previously you could only pass parameters to a top-level component with RenderMode.Static. With this release, both RenderMode.Server and RenderModel.ServerPrerendered are now supported. Any specified parameter values are serialized as JSON and included in the initial response.

For example, you could prerender a Counter component with a specific current count like this:

@(await Html.RenderComponentAsync(RenderMode.ServerPrerendered, new { Cur

[guardrex]

Use this one (version is important, so link to 3.1) ...

https://docs.microsoft.com/en-us/aspnet/core/blazor/components?view=aspnetcore-3.1#integrate-components-into-razor-pages-and-mvc-apps

... there's an existing PR for the components topic. I'd like to make the call out more explicit than what the example there shows. However, it's fairly obvious that the param is passed there as it is.

[guardrex]

I added a line to that section to surface it a bit more. That will merge shortly. You can go ahead with that link :point_up: versioned for 3.1.

[Rick-Anderson]

3.1 becomes the default tomorrow.
Thanks.