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StructLayoutAttribute.Size Field

Indicates the absolute size of the class or structure.

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

val mutable Size: int

This field must be equal or greater than the total size, in bytes, of the members of the class or structure. This field is primarily for compiler writers who want to extend the memory occupied by a structure for direct, unmanaged access. For example, you can use this field when working with unions that are not represented in metadata directly.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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