35 lines
1.3 KiB
Markdown
35 lines
1.3 KiB
Markdown
## WCF AddressHeaderCollection now throws an ArgumentException if an addressHeader element is null
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### Scope
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Minor
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### Version Introduced
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4.7.1
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### Source Analyzer Status
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NotPlanned
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### Change Description
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Starting with the .NET Framework 4.7.1, the <xref:System.ServiceModel.Channels.AddressHeaderCollection.#ctor(System.Collections.Generic.IEnumerable{System.ServiceModel.Channels.AddressHeader})> constructor throws an <xref:System.ArgumentException> if one of the elements is `null`. In the .NET Framework 4.7 and earlier versions, no exception is thrown.
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### Recommended Action
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If you encounter compatibility issues with this change on the .NET Framework 4.7.1 or a later version, you can opt-out of it by adding the following line to the `<runtime>` section of the app.config file::
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```xml
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<configuration>
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<runtime>
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<AppContextSwitchOverrides value="Switch.System.ServiceModel.DisableAddressHeaderCollectionValidation=true" />
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</runtime>
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</configuration>
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```
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### Affected APIs
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* `M:System.ServiceModel.Channels.AddressHeaderCollection.#ctor(System.Collections.Generic.IEnumerable{System.ServiceModel.Channels.AddressHeader})`
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### Category
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Windows Communication Foundation (WCF)
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<!--
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### Original Bug
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[275879] (https://devdiv.visualstudio.com/web/wi.aspx?pcguid=011b8bdf-6d56-4f87-be0d-0092136884d9&id=275879)
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--> |