Marshal::SizeOf Method (Type^)

.NET Framework (current version)

Returns the size of an unmanaged type in bytes.

Namespace: System.Runtime.InteropServices
Assembly: mscorlib (in mscorlib.dll)

Syntax

public:
static int SizeOf(
	Type^ t
)

Parameters

t: Type: System::Type^
The type whose size is to be returned.

Return Value

Type: System::Int32

The size of the specified type in unmanaged code.

Exceptions

Exception	Condition
ArgumentException	The t parameter is a generic type.
ArgumentNullException	The t parameter is null.

Remarks

You can use this method when you do not have a structure. The layout must be sequential or explicit.

The size returned is the size of the unmanaged type. The unmanaged and managed sizes of an object can differ. For character types, the size is affected by the CharSet value applied to that class.

Examples

The following example demonstrates calling the SizeOf method. This code example is part of a larger example provided for the Marshal class.

C++

// Demonstrate the use of the SizeOf method of the Marshal
// class.
Console::WriteLine("Number of bytes needed by a Point object: {0}",
    Marshal::SizeOf(Point::typeid));
Point point;
Console::WriteLine("Number of bytes needed by a Point object: {0}",
    Marshal::SizeOf(point));

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1