IAppDomainInfoEnum.Count Method    
Definition
Important
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Retrieves the number of application domains.
This API supports the product infrastructure and is not intended to be used directly from your code.
public:
 int Count();public int Count();abstract member Count : unit -> intPublic Function Count () As IntegerReturns
The number of application domains.
Remarks
Count is introduced in the .NET Framework 3.5. For more information, see Versions and Dependencies.