In F#, constructor is somewhat different than other .Net languages. There are always a primary constructor that may or may not have parameters. Scope of these parameters are throughout the class.
You can create a new additional constructor by using new keyword. Body of constructor must invoke the primary constructor specified at the top of the class declaration.
F# Constructor Example
F# Non-parameterized Constructor
This is non parametrized constructor
F# Parameterized Constructor
100 Rajkumar 25000.00 101 john 26000.00