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AppDomain.ExecuteAssemblyByName Method (String)

Executes an assembly given its display name.

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

public int ExecuteAssemblyByName (
	string assemblyName
public int ExecuteAssemblyByName (
	String assemblyName
public function ExecuteAssemblyByName (
	assemblyName : String
) : int
Not applicable.



The display name of the assembly. See Assembly.FullName.

Return Value

The value returned by the entry point of the assembly.

Exception typeCondition


assemblyName is a null reference (Nothing in Visual Basic).


The assembly specified by assemblyName is not found.


The assembly specified by assemblyName is not a valid assembly.


Version 2.0 or later of the common language runtime is currently loaded and assemblyName was compiled with a later version.


The operation is attempted on an unloaded application domain.


The assembly specified by assemblyName was found, but could not be loaded.

The ExecuteAssemblyByName method provides similar functionality to the ExecuteAssembly method, but specifies the assembly by display name or AssemblyName rather than by file location. Therefore, ExecuteAssemblyByName loads assemblies with the Load method rather than with the LoadFile method.

The assembly begins executing at the entry point specified in the .NET Framework header.

This method does not create a new process or application domain, and it does not execute the entry point method on a new thread.

To create the AppDomain to load and execute, use the CreateDomain method.

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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0