How can I create an optional DateTime parameter?

Question

I have this function that returns a reference type. Now, this function has two optional parameters both of which are instances of the DateTime class. The function i

Answer 1

You can set the DateTime to be nullable and then convert to DateTime.Min if no parameter is provided:

public DateTime GetDate(DateTime? start = null, DateTime? end = null) {
    var actualStart = start ?? DateTime.Min;
    var actualEnd = end ?? DateTime.Min;
}