38 lines
1.1 KiB
Markdown
38 lines
1.1 KiB
Markdown
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## Unexpected InvalidCastException from InvokeMethod activity in WF4
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### Scope
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Minor
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### Version Introduced
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4.5
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### Version Reverted
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4.5
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### Source Analyzer Status
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Planned
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### Change Description
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Using a System.Activities.Statements.InvokeMethod that targets a method with a nullable parameter can throw an InvalidCastException.
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- [ ] Quirked
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- [ ] Build-time break
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### Recommended Action
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This behavior was reverted in a .NET Framework 4.5 servicing release. Please update the .NET Framework 4.5 (or upgrade to .NET Framework 4.5.1 or later) to fix the issue.
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### Affected APIs
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* `P:System.Activities.Statements.InvokeMethod.Parameters`
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### Category
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Windows Workflow Foundation (WF)
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[More information](http://connect.microsoft.com/VisualStudio/feedback/details/758736/unexpected-invalidcastexception-from-invokemethod-activity-in-wf4-after-net-4-5-install)
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<!--
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### Notes
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Activities can be defined in xaml (as well as programmatically), so it will be good to create a non-code analyzer to identify those. See the repro in the linked bug for an example.
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-->
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<!-- breaking change id: 88 -->
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