Custom Event or Event with filter criteria ????

Question

 

Hi all,

So far I see all .NET event can only support an Event signature without specifying any filter from the client side ( for example MachineInAlarmState() ).

 

I would like to know if there is anything that allows me to satify this requirement:

I need to subscribe to an event with a filter and only receive a notification message when the condition is right (the filter criteria).

 

For example: I have 1000 data items or more from an event service but a client only wants to receive an event from certain data item (for example: item # 10 and its value > 10) .

 

The only way I can think of is somehow I need to be able to create an event or a subscription that I can specifiy which data item I need to receive an event from under certain condition (filter).

 

 

 

Thanks for any idea

 

 

Answer 1

hi

if possible can u post the code here

 

Answer 2

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Thank you!