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TypeLibVarAttribute Class

Contains the VARFLAGS that were originally imported for this field from the COM type library.

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

[AttributeUsageAttribute(AttributeTargets.Field, Inherited = false)]
public sealed class TypeLibVarAttribute : Attribute

The Type Library Importer (Tlbimp.exe) applies this attribute to fields.

This attribute is applied when a type library is imported and should never be changed. It is only applied when the method's VARFLAGS evaluate to non-zero. The attribute is designed to be used by tools that need to know how the original VARFLAGS were set. The common language runtime does not use this attribute.

The following example demonstrates how to get the TypeLibVarAttribute value of a field.

using System;
using System.Reflection;
using System.Runtime.InteropServices;

namespace D
	class ClassD
		public static bool IsHiddenField( FieldInfo fi )
			object[] FieldAttributes = fi.GetCustomAttributes( typeof( TypeLibVarAttribute ), true);
			if( FieldAttributes.Length > 0 )
				TypeLibVarAttribute tlv = ( TypeLibVarAttribute )FieldAttributes[0];
				TypeLibVarFlags  flags = tlv.Value;
				return ( flags & TypeLibVarFlags.FHidden ) != 0; 
			return false;


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

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