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MarshalAsAttribute.SizeConst Field

Indicates the number of elements in the fixed-length array or the number of characters (not bytes) in a string to import.

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

public int SizeConst

This field is required for the ByValArray and ByValTStr members of the System.Runtime.InteropServices.UnmanagedType enumeration. Because the compressed format of the metadata is limited to 0x1FFFFFFF, the range of allowed values for SizeConst are (>= 0 and <= 0x1FFFFFFF).

For additional information, see Default Marshaling for Arrays.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 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

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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