What is the best way to keep two C# applications synced with same database over network

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SQL-Server-2008R2

I'm begginer in databases,
Now i'm working on clinic project

I designed an application for the doctor's computer and another application for the secretary (just to create bookings for patients )

secretary application is connected to the database remotely that exists on the
doctor's computer

I made a timer that executing a stored prosdure (SELECT Statement) every second so the doctor can see the inserted data from the seceratry just when it's created
and keep secretary application always updated with the database too
so i built the sync system on the timer& stored procedures idea
but it doesn't work fine
some times queries lock each other because i've no experience with lock methods in sql server, otherwise the repeted query is affects the application performance

What I have tried:

I heared about microsoft sync framework but i don't know how it works or how can it be usefull to me in this case

Posted 27-Apr-17 22:32pm

XRushdy

Updated 27-Apr-17 23:49pm

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vivvicks 28-Apr-17 4:55am

what about maitinang isolation level at DB level

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CHill60 · Answer 1 · 2017-04-27T23:49:00

Get rid of the timer. They are awful things. As you have experienced they can just tie your system up doing nothing useful.

Both applications are "looking at" the same database, so sync is not relevant to your problem.

Personally I would the application in such a way that the user has to refresh a view and if they try to enter any data then the data is automatically refreshed for them. After all, I suspect the Doctor will be dealing with patients not watching his screen waiting for information to appear.

The SqlDependency class might be what you are looking for - see Solution 1 by maciej los here - Is it possible to monitor multiple table data changes using SQL table dependency?[^]

Given your current level of knowledge, I would just provide a refresh button to each user.