Hi,
I am using a MustNotInheritable class in vb.net with a Private constructer, for restricting new instances, which can be used directly without declaration. In this class we have both public and private 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, what actually happens internally?

i. Whether object implements thread safety, which automatically synchronize the calls of the multi-users.
ii. Whether the class takes cares only single call, without caring other calls?, means working like a single threaded component.
iii. Whether the class automatically create instance for the each users.

Or any another answer for this.

Please kindly let me know clearly what actually happens and how the threads behave

Hi friends,
I had posted my query long back but i didn't got response to it. Now i have the solution for it and i got it 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.

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actually the thing here is MustnotInheritable/sealed class with private constructors are not targetted to
implement
directly in side the application without any transaction control. It
may be
included in Business Logic Layer or SQLTransaction object. For example this
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.

thanks...

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

Nag