How to enable Multiple Active Result Sets (MARS) in your .NET application?

150.

Add "MultipleActiveResultSets=1" keyword pair to your connection string

"MultipleActiveResultSets=True" keyword pair to your connection string

It is enabled by default

Both 2 and 3

The MARS feature is disabled by default. It can be enabled by adding the "MultipleActiveResultSets=True" keyword pair to your connection string. "True" is the only valid value for enabling MARS.