1.3 KiB
1.3 KiB
Workflow now throws original exception instead of NullReferenceException in some cases
Scope
Minor
Version Introduced
4.7
Source Analyzer Status
NotPlanned
Change Description
In the .NET Framework 4.6.2 and earlier versions, when the Execute method of a
workflow activity throws an exception with a null value for the
xref:System.Exception.Message property, the
System.Activities Workflow runtime throws a
xref:System.NullReferenceException?displayProperty=name, masking the original
exception.
In the .NET Framework 4.7, the previously masked exception is thrown.
- Quirked
- Build-time break
Recommended Action
If your code relies on handling the xref:System.NullReferenceException?displayProperty=name, change it to catch the exceptions that could be thrown from your custom activities.
Affected APIs
M:System.Activities.CodeActivity.Execute(System.Activities.CodeActivityContext)M:System.Activities.AsyncCodeActivity.BeginExecute(System.Activities.AsyncCodeActivityContext,System.AsyncCallback,System.Object)M:System.Activities.AsyncCodeActivity1.BeginExecute(System.Activities.AsyncCodeActivityContext,System.AsyncCallback,System.Object)`M:System.Activities.WorkflowInvoker.Invoke
Category
Windows Workflow Foundation (WF)