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interop-event-handlers-safearray.md

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.NET COM successfully marshals ByRef SafeArray parameters on events

Scope

Minor

Version Introduced

4.8

Source Analyzer Status

NotPlanned

Change Description

In the .NET Framework 4.7.2 and earlier versions, a ByRef SafeArray parameter on a COM event would fail to marshal back to native code. With this change the SafeArray is now marshalled successfully.

  • [ x ] Quirked
  • Build-time break

Recommended Action

If properly marshalling ByRef SafeArray parameters on COM Events breaks execution, you can disable this code by adding the following configuration switch to your application config:

<appSettings>
    <add key="Switch.System.Runtime.InteropServices.DoNotMarshalOutByrefSafeArrayOnInvoke" value="true" />
</appSettings>

Category

Core