Add an icon to extension does not work

[websiteflash]

Hello,
i want to add an icon to my extension, but it does not work. i want to add a custom image, the example code on fiddler-docs/Extend-Fiddler/AddIcon.md is as same as use an existing icon, is there some mistake?

and my code is like this, but also do not work, can you help me?

Image newImage = Image.FromFile(@"E:\svn\connect_proj\trunk\tools\rosin\Rosin\test.jpg");
            FiddlerApplication.UI.imglSessionIcons.Images.Add("Rosin", newImage);
            oPage.ImageKey = "Rosin";

            oPage.Controls.Add(this.oConfigControl);
            this.oConfigControl.Dock = DockStyle.Fill;

            int size = FiddlerApplication.UI.tabsViews.TabPages.Count;
            FiddlerApplication.UI.tabsViews.TabPages.Insert(size, oPage);

[ericlaw1979]

I vaguely recall an issue with the .NET image lists whereby the image isn't loaded until a Windows UI message is processed.

Try setting the ImageKey property after you add the TabPage to tabsViews.

[websiteflash]

@ericlaw1979 Good, the icon work now, thank you very much.