Mapcontrol Application Adding a custom tool bar

Now I want to do something with two development, then I need a custom toolbar, but how to add a custom toolbar to Mapcontrol application, after many experiments, finally found the corresponding method (the left figure is to add a custom toolbar before Right image is after adding a custom toolbar)

There are four controls in Mapcontrol application, namely Arcengine Toolbarcontrol,arcengine toccontrol,arcengine Mapcontrol, and Arcengine Licensecontrol.

All you need to do here is set the Dock property of the Toolbarcontrol, Toccontrol,mapcontrol three controls to null, and then the rest is set manually (for example, after adding toolbar, the frame should be enlarged and so on).

Mapcontrol Application Adding a custom tool bar