Can I set breakpoints to all methods in a class at once in Visual Studio?

There is an addon-less method described here:
How to set a breakpoint on a C++ class in the Visual Studio Debugger

In short, you can bring up the “New Breakpoint” dialog by pressing Ctrl+K, B and type in ClassName::* to the function field. In Visual Studio 2017 you need to include the namespace in the field, as in NamespaceName::ClassName::*.
You can then disable some of them in the breakpoints window.