Question

I’m making a simple Image Debugger Visualizer. Code is below. I’m not sure if i need to manually dispose of the Image instance? Because i’m making a windows Form window and the PictureBox inside that contains my dynamic image .. do i need to add some special code when the form is terminating, to dispose of this?

here’s the code..

using System.Diagnostics; using System.Drawing; using System.Windows.Forms; using Microsoft.VisualStudio.DebuggerVisualizers; using DebuggerVisualizers;  [assembly: DebuggerVisualizer(     typeof (ImageDebuggerVisualizer),     typeof (VisualizerObjectSource),     Target = typeof (Image),     Description = 'Image Visualizer')]  namespace DebuggerVisualizers {     public class ImageDebuggerVisualizer : DialogDebuggerVisualizer     {         protected override void Show(IDialogVisualizerService windowService, IVisualizerObjectProvider objectProvider)         {             Image image = (Image) objectProvider.GetObject();             Form form = new Form                            {                                Text = ('Image Visualizer - ' + image.HorizontalResolution + ' ' + image.VerticalResolution),                                Width = image.Width,                                Height = image.Height                            };              PictureBox pictureBox = new PictureBox {Image = image, SizeMode = PictureBoxSizeMode.AutoSize};             form.Controls.Add(pictureBox);             form.ShowDialog();         }     } } 

thanks for any help 🙂

Answer 1

Change your Show method to this:

protected override void Show(IDialogVisualizerService windowService,     IVisualizerObjectProvider objectProvider)         {                 Image image = (Image) objectProvider.GetObject();     using (Form form = new Form())     {                     PictureBox pictureBox = new PictureBox();             pictureBox.Image = image;                 form.Controls.Add(pictureBox);          form.ShowDialog();     }  } 

The using(){} block will call Dispose on the form after it closes, which will dispose of everything on the form also.