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While trying to develop my first VS Addin, I am having issues in firing DTE2 events. Basically, the DocumentOpened and LineChanged events don't fire for some reason. What important part did I miss? namespace TestAddin { public class Connect : IDTExtensibility2 { private AddIn _addInInstance; private DTE2 _applicationObject; public void OnConnection(object application, ext_ConnectMode connectMode, object addInInst, ref Array custom) { _applicationObject = (DTE2) application; _addInInstance = (AddIn) addInInst; _applicationObject.Events.DocumentEvents.DocumentOpened += InitializeFoldingOnDocument; _applicationObject.Events.TextEditorEvents.LineChanged += UpdateFoldingOnDocument; } private void UpdateFoldingOnDocument(TextPoint startpoint, TextPoint endpoint, int hint) { RegionFolding(_applicationObject.ActiveDocument); } private void InitializeFoldingOnDocument(Document document) { RegionFolding(document); } private void RegionFolding(Document _document) { // Do the folding [...] } // Other IDTExtensibility2 Members [...] } }

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