Document advanced configuration binding scenarios and limitations

[Copilot]

Completed: Add Missing Configuration Binding Details

• Research and understand the four missing topics
• Create code examples for each scenario
• Add new section to configuration.md with detailed explanations
• Test all code snippets to ensure they compile and run correctly
• Code review and address feedback
• Final validation
• Address PR review comments
  • Updated package versions from 9.0.0 to 10.0.2 to align with other configuration snippets
  • Added ai-usage: ai-assisted metadata to configuration.md

Original prompt

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This section details on the original issue you should resolve

<issue_title>Binding documentation is missing important details</issue_title>
<issue_description>### Type of issue

Typo

Description

The documentation is missing important details about how binding works. For example, it does not explain:

1. How binding works with dictionaries:
   • https://learn.microsoft.com/en-us/dotnet/core/compatibility/extensions/7.0/config-bind-dictionary
2. How binding works with dictionaries whose keys can contain a colon:
   • System.InvalidOperationException if configuration has dictionary with colon in key. aspnet/Configuration#792
3. How binding works with IReadOnly* types:
   • Microsoft.Extensions.Configuration: IReadOnlyList Options with default value are not filled runtime#38852
4. How binding works with classes that have multiple parameterized constructors

Page URL

https://learn.microsoft.com/en-us/dotnet/core/extensions/configuration#binding

Content source URL

https://github.com/dotnet/docs/blob/main/docs/core/extensions/configuration.md

Document Version Independent Id

0d5de37c-8f89-b6a5-3132-2c5214196bfd

Platform Id

212ae417-5e03-de34-9bd9-b3e8724270df

Article author

@IEvangelist

Metadata

• ID: b458a209-339d-e896-4e85-6d1c6a7aa1f9
• PlatformId: 212ae417-5e03-de34-9bd9-b3e8724270df
• Service: dotnet-fundamentals

Related Issues</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Binding documentation is missing important details #48545

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Internal previews

📄 File	🔗 Preview link
docs/core/compatibility/extensions/7.0/config-bind-dictionary.md	docs/core/compatibility/extensions/7.0/config-bind-dictionary
docs/core/extensions/configuration.md	docs/core/extensions/configuration

[Copilot]

Pull request overview

This PR expands the .NET configuration binding docs to cover advanced binder behaviors and limitations, and it adds a runnable snippet project to demonstrate several of those scenarios.

Changes:

• Add an Advanced binding scenarios section to configuration.md (dictionary collection values behavior, colon-in-key limitation, IReadOnly* limitations, and parameterized constructor binding notes).
• Add a new runnable snippet project (DictionaryBinding) with code regions used by the docs.
• Fix a minor xref formatting issue in the .NET 7 breaking change article for dictionary binding.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 6 comments.

File	Description
docs/core/extensions/snippets/configuration/binding-scenarios/DictionaryBinding/Program.cs	Adds runnable examples and snippet regions for dictionary collection values, IReadOnly* patterns, and parameterized constructor binding.
docs/core/extensions/snippets/configuration/binding-scenarios/DictionaryBinding/DictionaryBinding.csproj	Adds a new snippet project file to build/run the new examples.
docs/core/extensions/configuration.md	Adds a new “Advanced binding scenarios” section, adjusts some headings/formatting, and updates the providers table text.
docs/core/compatibility/extensions/7.0/config-bind-dictionary.md	Fixes the dictionary xref formatting (Dictionary\2`).