ThreadStateException Class
The exception that is thrown when a Thread is in an invalid ThreadState for the method call.
Assembly: mscorlib (in mscorlib.dll)
The ThreadStateException type exposes the following members.
| Name | Description | |
|---|---|---|
![]() ![]() | ThreadStateException() | Initializes a new instance of the ThreadStateException class with default properties. |
![]() ![]() | ThreadStateException(String) | Initializes a new instance of the ThreadStateException class with a specified error message. |
![]() | ThreadStateException(SerializationInfo, StreamingContext) | Initializes a new instance of the ThreadStateException class with serialized data. |
![]() ![]() | ThreadStateException(String, Exception) | Initializes a new instance of the ThreadStateException 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.) |
Once a thread is created, it is in at least one of the ThreadState states until it terminates. ThreadStateException is thrown by methods that cannot perform the requested operation due to the current state of a thread. For example, trying to restart an aborted thread by calling Start on a thread that has terminated throws a ThreadStateException.
ThreadStateException uses the HRESULT COR_E_THREADSTATE, which has the value 0x80131520.
For a list of initial property values for an instance of ThreadStateException, see the ThreadStateException constructors.
The following example demonstrates an error that causes the system to throw a ThreadStateException.
using namespace System; using namespace System::Threading; ref class ThreadWork { public: static void DoWork() { Console::WriteLine( "Working thread..." ); } }; int main() { ThreadStart^ myThreadDelegate = gcnew ThreadStart( ThreadWork::DoWork ); Thread^ myThread = gcnew Thread( myThreadDelegate ); myThread->Start(); Thread::Sleep( 0 ); Console::WriteLine( "In main. Attempting to restart myThread." ); try { myThread->Start(); } catch ( ThreadStateException^ e ) { Console::WriteLine( "Caught: {0}", e->Message ); } }
This code produces the following output:
In main. Attempting to restart myThread.
Working thread...
Caught: Thread is running or terminated. Cannot restart.
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.

