What is the scope of a Static Class?

c# static biztalk applicationdomain
Keith Sirmons picture Keith Sirmons · Nov 12, 2008 · Viewed 10.2k times · Source

I have an assembly that may be used by more than one process at a time. If I am using a static class, would the multiple processes all use the same "instance" of that class?

Since the processes are separate, would these be running under difference Application Domains, hence have the static "instances" separate?

The pudding in the details here is that the assembly is being used by a custom BizTalk adapter that my be set to process the messages in parallel batches. That is what I am calling "multiple processes" above.

Answer

tvanfosson picture tvanfosson · Nov 12, 2008

Static classes exist once per application domain. In your case, it would depend on whether the adapter is using multiple threads in the same application domain (thus sharing a single instance of the static class) or using multiple processes (thus having separate instances of the static class).

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