public override void Run() { // Get WixExtensionFolderNode. WixExtensionFolderNode folderNode = GetWixExtensionFolderNode(); if (folderNode == null) { return; } // Display file dialog. using (OpenFileDialog fileDialog = CreateOpenFileDialog()) { if (DialogResult.OK == fileDialog.ShowDialog(WorkbenchSingleton.MainForm)) { // Add files to project. WixProject project = ((WixProject)folderNode.Project); project.AddWixExtensions(fileDialog.FileNames); project.Save(); } } // Refresh project browser. folderNode.Refresh(); folderNode.Expanding(); folderNode.Expand(); }