Document WebHostBuilder, IWebHost, and WebHost deprecation breaking change #48274
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… RC 1 Co-authored-by: gewarren <[email protected]>
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This PR documents the breaking change where
WebHostBuilder,IWebHost, andWebHostare marked as obsolete in .NET 10 RC 1, as announced in aspnet/Announcements#526.The deprecation introduces two new diagnostic warnings:
WebHostBuilderusageIWebHostandWebHostusageThese APIs are being deprecated in favor of
HostBuilder(introduced in ASP.NET Core 3.0) andWebApplicationBuilder(introduced in ASP.NET Core 6.0), which are where future investments will occur.Changes Made
Created
docs/core/compatibility/aspnet-core/10/webhostbuilder-deprecated.mdwith comprehensive documentation including:HostBuilderandWebApplicationBuilderapproachesUpdated
docs/core/compatibility/toc.ymlto include the new breaking change documentUpdated
docs/core/compatibility/10.0.mdto add the breaking change entry to the ASP.NET Core tableThe documentation follows .NET docs standards with proper AI-usage disclosure and passes all markdown linting validation.
Fixes #48259.
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