Microsoft Visual Studio 2015 Unleashed, Third Edition

Path Selection with a Common Dialog Box

The last item on our to-do list is allowing the user to change the path of the picture files. WPF itself doesn’t have built-in dialog box classes to manage this, but the System.Windows.Forms namespace has just what we need: the FolderBrowserDialog class. This is launched from within the event handler for our FolderOpenMenuItem Click event.

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private void FolderOpenMenuItem_Click(object sender, RoutedEventArgs e){   SetPath();}private void SetPath(){   FolderBrowserDialog dlg = new FolderBrowserDialog();   dlg.ShowDialog();   _path = dlg.SelectedPath;   ResetList();}

When a user selects a folder, we update our internal field appropriately, reload the DirectoryImageList class with ...