Using Time Span to compare two time intervals

Question

I want to compare between a certain time and the current time to check if it has exceeded a given period.

I think i should be using TimeSpan but i am not sure how. The two dates im comparing are DateTime objects.

 TimeSpan ts = TimeSpan.FromSeconds(_timeInterval);

 if(DateTime.UtcNow.Ticks - rex.LastFired.Ticks > ts.Ticks)
    // bla bla

Solution 1

Just compare the difference between your dates with a timespan.

var start = new DateTime(2013, 02, 15);
var now = DateTime.Now;

var oneWeek = new TimeSpan(7, 0, 0, 0);

if (now - start > oneWeek) {
    Console.Write("One week is passed since start date.");
} else {
    Console.Write("One week not yet passed since start date.");
}

Solution 2

if(DateTime.UtcNow - rex.LastFired > ts)
     ...

Solution 3

Why not use the DateTime.Compare ?

http://msdn.microsoft.com/en-us/library/system.datetime.compare.aspx

EDIT: you ll first have to use TimeSpan.Substract or DateTime.Substract, then you can use the appropiate .Compare method.

Comments

[Alex Filipovici]

I think you have to use rex.LastFired (without .Ticks).

[Thomas Levesque]

@AlexFilipovici, yes, that's what I intended to write... thanks