Represents the smallest possible value of a double. This field is constant.
The value of this constant is negative 1.7976931348623157E+308.
The result of an operation that is less than double.MinValue is double.NegativeInfinity. In the following example, double.NegativeInfinity results from subtraction and multiplication operations when the result is less than double.MinValue.
code reference: System.Double.MinValue#1