Solo se puede ejecutar un comando cada vez para un InstanceHandle individual. No llame al método Execute o BeginExecute en InstanceStore hasta que se haya completado el comando anterior para este InstanceHandle.
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English version
Only one command at a time can be executed for a single InstanceHandle. Do not call the method Execute or BeginExecute on InstanceStore until the previous command executing for this InstanceHandle has completed.
.Net Framework