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This topic applies to Windows Workflow Foundation 4 (WF4).
The Interop activity allows you to run a .NET Framework 3.0 Windows Workflow Foundation (WF) activity within a .NET Framework 4 workflow. This sample demonstrates how to use the Interop activity to pass a string as an argument to a custom .NET Framework 3.0 activity.
To use this sample
Using Visual Studio 2010, open the SimpleInterop.sln solution file.
To build the solution, press CTRL+SHIFT+B.
To run the solution, press CTRL+F5.
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The samples may already be installed on your machine. Check for the following (default) directory before continuing.
<InstallDrive>:\WF_WCF_Samples
If this directory does not exist, go to Windows Communication Foundation (WCF) and Windows Workflow Foundation (WF) Samples for .NET Framework 4 to download all Windows Communication Foundation (WCF) and WF samples. This sample is located in the following directory.
<InstallDrive>:\WF_WCF_Samples\WF\Basic\Migration\SimpleInterop
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