官方版

Add an Icon to Your Extension’s Tab

Use an Existing Icon

Set the .ImageIndex property as follows:

  public void OnLoad()
    {
    oPage = new TabPage("Timeline");
    oPage.ImageIndex = (int)Fiddler.SessionIcons.Timeline;
    oView = new TimelineView();
    oPage.Controls.Add(oView);
    oView.Dock = DockStyle.Fill;
    FiddlerApplication.UI.tabsViews.TabPages.Add(oPage); 
    }

Add a Custom Image

1. Add the image to imglSessionIcons.
   
2. Set the .ImageIndex property as follows:
   

   public void OnLoad()
   {
   oPage = new TabPage("Timeline");
   oPage.ImageIndex = (int)Fiddler.SessionIcons.Timeline;
   oView = new TimelineView();
   oPage.Controls.Add(oView);
   oView.Dock = DockStyle.Fill;
   FiddlerApplication.UI.tabsViews.TabPages.Add(oPage); 
   }

谷歌翻译版

向扩展选项卡添加一个图标

使用现有图标

设置.ImageIndex属性，如下所示：

  public void OnLoad()
    {
    oPage = new TabPage("Timeline");
    oPage.ImageIndex = (int)Fiddler.SessionIcons.Timeline;
    oView = new TimelineView();
    oPage.Controls.Add(oView);
    oView.Dock = DockStyle.Fill;
    FiddlerApplication.UI.tabsViews.TabPages.Add(oPage); 
    }

使用自定义图像

1. 将图像添加到imglSessionIcons中。
2. 设置.ImageIndex属性，如下所示：

   public void OnLoad()
   {
   oPage = new TabPage("Timeline");
   oPage.ImageIndex = (int)Fiddler.SessionIcons.Timeline;
   oView = new TimelineView();
   oPage.Controls.Add(oView);
   oView.Dock = DockStyle.Fill;
   FiddlerApplication.UI.tabsViews.TabPages.Add(oPage); 
   }