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AppDomain.ReflectionOnlyAssemblyResolve Event

Occurs when the resolution of an assembly fails in the reflection-only context.

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

public event ResolveEventHandler ReflectionOnlyAssemblyResolve

In the reflection-only context, dependencies are not resolved automatically. They must be preloaded or returned by the handler for this event. This event is raised when an assembly has a dependency that is not already loaded into the reflection-only context. The missing dependency is specified by the ResolveEventArgs.Name property. The ResolveEventHandler for this event must return an assembly that satisfies the dependency. The assembly that is returned must be loaded into the reflection-only context.

Important noteImportant

This event is raised only for missing dependencies of the assembly that you are loading into the reflection-only context (for example, by using the Assembly.ReflectionOnlyLoad method). It is not raised if the assembly that you are loading cannot be found.

Beginning with the .NET Framework version 4, the ResolveEventArgs.RequestingAssembly property returns the assembly that requested the assembly load that could not be resolved. Knowing the identity of the requesting assembly might be useful in identifying the correct version of the dependency, if more than one version is available. For more information, see ResolveEventArgs.RequestingAssembly.

For this event, the ResolveEventArgs.Name property returns the assembly name before policy is applied.

For more information about handling events, see Consuming Events.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

  • SecurityCriticalAttribute 

    requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.

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.