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Old April 27th, 2004, 02:00 AM
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Default About(sealed in c#/MustNotInheritabl in vb) class

I am using a (sealed in c#/MustNotInheritable in vb) class with a Private constructer, for restricting new instances, which can be used directly without declaration. In this class we have both public and private static(for C#)/shared methods, which contains local variables inside the methods. This methods used for fetching, updating the data using datasets, dataviews, command objects & parameters for calling procedures in the database. So when more than one user calls the same method declared as public shared/static, what actually happens internally?

i. Whether object implements thread safety, which automatically synchronize the calls of the multi-users.
ii. Whether the utility class takes cares only single call, without caring other calls?, means working like a single threaded component.
iii. Whether the utility class automatically create instance for the each users.
Please kindly let me know clearly what actually happens and how the threads behave

Old May 3rd, 2004, 02:48 AM
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Hi friends,
I was post my query long back but i didn't got response to it. Now i got solution from one of my friend. But i saw people read my post. So it would nice if i share my answer with everyone. Thanks for the persons who read my previous post.

actually the thing here is MustnotInheritable/sealed class with private constructors are not targetted to
directly in side the application without any transaction control. It
may be
included in Business Logic Layer or SQLTransaction object. For example this type of component can be used with COM+ transactions. when we come across any situation to use this component for transactions, it is better to use in conjunction with the Transaction model of ADo.net or COM+. Regarding thread safe, by default the components created by .NET are thread safe. Even more than user calls the same method, shared method inside using local variables. It creates new memory locatios for that. So any way it doesn't create any impact on application.


Do Reply if your problem solves. It helps everyone to find and get the right solution.


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