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LoaderOptimization Enumeration

Visual Studio 2010

An enumeration used with the LoaderOptimizationAttribute class to specify loader optimizations for an executable.

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

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[SerializableAttribute]
[ComVisibleAttribute(true)]
public enum LoaderOptimization

Member nameDescription
NotSpecifiedIndicates that no optimizations for sharing internal resources are specified. If the default domain or hosting interface specified an optimization, then the loader uses that; otherwise, the loader uses SingleDomain.
SingleDomainIndicates that the application will probably have a single domain, and loader must not share internal resources across application domains.
MultiDomainIndicates that the application will probably have many domains that use the same code, and the loader must share maximal internal resources across application domains.
MultiDomainHostIndicates that the application will probably host unique code in multiple domains, and the loader must share resources across application domains only for globally available (strong-named) assemblies that have been added to the global assembly cache.
DomainMask Obsolete. Do not use. This mask selects the domain-related values, screening out the unused DisallowBindings flag.
DisallowBindings Obsolete. Ignored by the common language runtime.

The meaning of MultiDomainHost changed in the .NET Framework version 2.0. The loader now shares resources across application domains only for assemblies that have been added to the global assembly cache.

NoteNote

If custom code access security policy is set for the AppDomain, by using the SetAppDomainPolicy property, and the AppDomain is created using the MultiDomain flag, the effect is the same as specifying the MultiDomainHost flag; that is, only assemblies in the GAC are shared. When this occurs, the loader does not throw an exception and the application does not experience the performance gains associated with the MultiDomain flag.

For more information on assembly sharing and domain-neutral assembly loading, see Application Domains and Assemblies.

.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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