SetCustomAttribute Method (ConstructorInfo, Byte[])

TypeBuilder.SetCustomAttribute Method (ConstructorInfo, Byte[])

Sets a custom attribute using a specified custom attribute blob.

Namespace:  System.Reflection.Emit
Assembly:  mscorlib (in mscorlib.dll)

member SetCustomAttribute : 
        con:ConstructorInfo * 
        binaryAttribute:byte[] -> unit 


Type: System.Reflection.ConstructorInfo
The constructor for the custom attribute.
Type: System.Byte[]
A byte blob representing the attributes.


con or binaryAttribute is a null reference (Nothing in Visual Basic).


For the current dynamic type, the IsGenericType property is true, but the IsGenericTypeDefinition property is false.

For more information on how to format binaryAttribute, see the Common Language Infrastructure (CLI) documentation, especially "Partition II: Metadata Definition and Semantics". The documentation is available online; see ECMA C# and Common Language Infrastructure Standards on MSDN and Standard ECMA-335 - Common Language Infrastructure (CLI) on the Ecma International Web site.


Starting with the .NET Framework version 2.0 Service Pack 1, this member no longer requires ReflectionPermission with the ReflectionPermissionFlag.ReflectionEmit flag. (See Security Issues in Reflection Emit.) To use this functionality, your application should target the .NET Framework version 3.5 or later.

.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

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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