In a Visual Studio Extension, how to respond to "Open Folder" as well as "Open Solution"?

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My Visual Studio Extension responds to the opening of a solution via IVsSolutionEvents.OnAfterOpenSolution().

Visual Studio 2017 introduced "Open Folder" as an alternative to "Open Solution", but when you open a folder, IVsSolutionEvents.OnAfterOpenSolution() doesn't fire. (Nor do any of the other events in IVsSolutionEvents, nor any of the events in IVsSolutionLoadEvents.)

How can my extension know when a Folder, as opposed to a Solution, is opened?

vs-extensibility visual-studio-2017 vsix visual-studio
1 Answers

You have to use the IVsSolutionEvents7.OnAfterOpenFolder Method that has been added for Visual Studio 2017.

Notifies listening clients that the folder has been opened.

public void OnAfterOpenFolder (string folderPath);

Since this is a native COM interface, you also have to make sure the implementing class is COM visible (through the ComVisible attribute that you can set on the assembly, on the class, on a base class, etc.).

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