How to know if your code is running on the Windows Azure compute emulator

To understand whether the role instance is running in the Windows Azure compute emulator, you simply need to check this static variable:

RoleEnvironment.IsEmulated

Namespace: Microsoft.WindowsAzure.ServiceRuntime
Assembly: Microsoft.WindowsAzure.ServiceRuntime (in Microsoft.WindowsAzure.ServiceRuntime.dll)

http://msdn.microsoft.com/en-us/library/microsoft.windowsazure.serviceruntime.roleenvironment.isemulated.aspx