使用DesignMode属性与licensemanagemode . usagemode

I've seen multiple posts and questions about the DesignMode property of Forms and UserControls. The idea is that you want to check if the control is in design mode (e.g. the control is shown in the Visual Studio Designer), and avoid code that can only be run in, well, run-time. The problem I've seen many have - and my failing memory exposed me to it too, recently - is that the DesignMode property does not work in the constructor, and does not work for the nested controls. However, it works extremely well in the Load event handler for your control or form!!I've seen multiple posts and questions about th