It mentions classes in some chapters that aren't defined until later chapters. When it does mention specific classes, it rarely lists all of their methods in a convenient and easy to read format. Instead, you have to look at the example code and hope there is some type of matching method that may be useful.

It is also missing very important and useful classes such as the DateTime class.

If you strictly want a book that maps basic C++ operations to C#, then this may be for you. Otherwise it is useless as a reference and not very well structured.