WebApr 13, 2011 · Marshal.SizeOf returns the size after the type has been marshaled, whereas sizeof returns the size as it has been allocated by the common language runtime, including any padding. source Example: unsafe { int size = sizeof (MyStruct)*myArray.Length; } Share Follow edited Feb 8, 2024 at 9:04 user541686 203k 124 520 875 WebJan 25, 2010 · The memory layout of a struct is not discoverable in .NET. The JIT compiler takes advantage of this, it re-orders the fields of a struct to get a more efficient layout. This plays havoc with any attempt to use the struct in a way that bypasses the normal marshaling mechanisms. Yes, Marshal.SiseOf() produces a size for a struct.
struct size? - C# / C Sharp
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WebFeb 4, 2024 · Firstly, the sizeof operator: this only shows how much space the type takes up in the abstract, with no padding applied round it. (It includes padding within a structure, but not padding applied to a variable of that type within another type.) Next, Marshal.SizeOf: this only shows the unmanaged size after marshalling, not the actual size in memory. WebDec 17, 2014 · One of my favorite sanity check tools in C is the sizeof() function, which tells you the size in bytes of a data type or struct. Well, C# has a sizeof() function, too, but it … WebDec 26, 2012 · You need to either use type FRIDGE in your other structure. typedef struct { int age; FRIDGE fridge; } PERSON; or define your fridge as struct FRIDGE struct FRIDGE { int number; }; Also, the structure may have to be defined before you use it (e.g. above the person). Share Improve this answer Follow edited Dec 26, 2012 at 12:38 gregory cagle texas