Use(logic) of : operator C#

Question

Can anyone explain what the ":" stands for in code. I understood the code but dont know the logic/condition behind this ":" operator.

public Constructor() : this("No names", string.Empty)
{
}

Answer 1

In your case, you have a class with multiple constructors, so the

class Constructor()

has a default(no args) constructor and a constructor wit 2 strings as argument.

If some one calls the default constructor, then the class will internally call the constructor with 2 strings overloading it.

that is the explanation of that code