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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


Type: System.String

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

Return Value

Type: System.Int32

The value returned by the entry point of the assembly.

Exception Condition

assemblyName is null.


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 specified assembly has no entry point.

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.


for access to read from a file or directory, for access to the information in the path itself, and for redirecting a display name to a path. Associated enumerations: FileIOPermissionAccess.Read, FileIOPermissionAccess.PathDiscovery.


for access to a Web site, when a display name is redirected to a URL.


to execute a console application. Associated enumeration: PermissionState.Unrestricted.

.NET Framework
Available since 2.0
Available since 2.0
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