You can combine named arguments with optional parameters.
Let see this method:
public sealed class SmsUtil
{
public static bool SendMessage(string from, string to, string message, int retryCount = 5, object attachment = null)
{
// Some code
}
}
When you want to call this method without set retryCount
argument :
var result = SmsUtil.SendMessage(
from : "Cihan",
to : "Yakar",
message : "Hello there!",
attachment : new object());