AppDomainUnloadedException Class
The exception that is thrown when an attempt is made to access an unloaded application domain.
Assembly: mscorlib (in mscorlib.dll)
The AppDomainUnloadedException type exposes the following members.
| Name | Description | |
|---|---|---|
![]() ![]() | AppDomainUnloadedException() | Initializes a new instance of the AppDomainUnloadedException class. |
![]() ![]() | AppDomainUnloadedException(String) | Initializes a new instance of the AppDomainUnloadedException class with a specified error message. |
![]() | AppDomainUnloadedException(SerializationInfo, StreamingContext) | Initializes a new instance of the AppDomainUnloadedException class with serialized data. |
![]() ![]() | AppDomainUnloadedException(String, Exception) | Initializes a new instance of the AppDomainUnloadedException class with a specified error message and a reference to the inner exception that is the cause of this exception. |
| Name | Description | |
|---|---|---|
![]() | Data | Gets a collection of key/value pairs that provide additional user-defined information about the exception. (Inherited from Exception.) |
![]() | HelpLink | Gets or sets a link to the help file associated with this exception. (Inherited from Exception.) |
![]() ![]() | HResult | Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception. (Inherited from Exception.) |
![]() ![]() | InnerException | Gets the Exception instance that caused the current exception. (Inherited from Exception.) |
![]() ![]() | Message | Gets a message that describes the current exception. (Inherited from Exception.) |
![]() | Source | Gets or sets the name of the application or the object that causes the error. (Inherited from Exception.) |
![]() ![]() | StackTrace | Gets a string representation of the immediate frames on the call stack. (Inherited from Exception.) |
![]() | TargetSite | Gets the method that throws the current exception. (Inherited from Exception.) |
| Name | Description | |
|---|---|---|
![]() ![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() ![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() ![]() | GetBaseException | When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions. (Inherited from Exception.) |
![]() ![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetObjectData | When overridden in a derived class, sets the SerializationInfo with information about the exception. (Inherited from Exception.) |
![]() ![]() | GetType | Gets the runtime type of the current instance. (Inherited from Exception.) In XNA Framework 3.0, this member is inherited from Object::GetType(). |
![]() ![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() ![]() | ToString | Creates and returns a string representation of the current exception. (Inherited from Exception.) |
| Name | Description | |
|---|---|---|
![]() | SerializeObjectState | Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception. (Inherited from Exception.) |
In the .NET Framework version 2.0, an AppDomainUnloadedException that is not handled in user code has the following effect:
If a thread was started in managed code, it is terminated. The unhandled exception is not allowed to terminate the application.
If a task is executing on a ThreadPool thread, it is terminated and the thread is returned to the thread pool. The unhandled exception is not allowed to terminate the application.
If a thread started in unmanaged code, such as the main application thread, it is terminated. The unhandled exception is allowed to proceed, and the operating system terminates the application.
AppDomainUnloadedException uses the HRESULT COR_E_APPDOMAINUNLOADED, which has the value 0x80131014.
For a list of initial property values for an instance of AppDomainUnloadedException, see the AppDomainUnloadedException constructors.
This section contains two code examples. The first example demonstrates the effects of an AppDomainUnloadedException on various threads, and the second shows elementary application domain unloading.
Example 1
The following code example defines a TestClass class that can be marshaled across application domain boundaries and an Example class containing a static (Shared in Visual Basic) ThreadProc method. The ThreadProc method creates an application domain, creates a TestClass object in the domain, and calls a method of TestClass that unloads the executing domain, causing an AppDomainUnloadedException.
The TestClass method is executed without exception handling from a ThreadPool thread and from an ordinary thread, demonstrating that the unhandled exception terminates the task or thread but not the application. It is then executed with and without exception handling from the main application thread, demonstrating that it terminates the application if not handled.
Example 2
The following code example creates and unloads an application domain, and demonstrates that an AppDomainUnloadedException is thrown on a subsequent attempt to access the unloaded domain.
using namespace System; using namespace System::Reflection; using namespace System::Security::Policy; //for evidence Object* int main() { //Create evidence for the new appdomain. Evidence^ adevidence = AppDomain::CurrentDomain->Evidence; // Create the new application domain. AppDomain^ domain = AppDomain::CreateDomain( "MyDomain", adevidence ); Console::WriteLine( "Host domain: {0}", AppDomain::CurrentDomain->FriendlyName ); Console::WriteLine( "child domain: {0}", domain->FriendlyName ); // Unload the application domain. AppDomain::Unload( domain ); try { Console::WriteLine(); // Note that the following statement creates an exception because the domain no longer exists. Console::WriteLine( "child domain: {0}", domain->FriendlyName ); } catch ( AppDomainUnloadedException^ /*e*/ ) { Console::WriteLine( "The appdomain MyDomain does not exist." ); } }
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.





