C#: Getting size of a value-type variable at runtime?

Question

I know languages such as C and C++ allow determining the size of data (structs, arrays, variables...) at runtime using sizeof() function. I tried that in C# and apparently i

Answer 1

To find the size of an arbitrary variable, x, at runtime you can use Marshal.SizeOf:

System.Runtime.InteropServices.Marshal.SizeOf(x)

As mentioned by dtb, this function returns the size of the variable after marshalling, but in my experience that is usually the size you want, as in a pure managed environment the size of a variable is of little interest.