*dark add-on theme *edit messagebox form if you want to change theme(colors/backrounds/fonts/etc) *messagebox types. Yesnocancel etc *create custom messagebox .net type with your own icon *catch respond of user to buttons you snndev can simply add the dll file as reference to your project. Import library function & custom studio create your own messageboxes. Here multi is visual a simple sharp example for a basic messagebox. You can create a fully modifiable messageboxes for your applications with tool a single line of code