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I’m struggling to understand the differences between ADO and ADO.NET.
ADO “Classic” has different lock levels… I’m wondering now, what is the default lock level for ADO.NET? How would I open a connection as Batch Lock or Read Only.
What is the default behavior of ADO.NET? What sort of lock does it place on a MSSQL database when doing a .fill().
ADO.net uses an optimistic locking concurrency by default but you also have to look at what is happening on the SQL server.
Unless you specify a hint such as NoLock a shared lock will be issued. This is a lightweight lock that allows other transactions to read a resource but no other transactions to modify the data. This lock is released after the data is finished being read