How to test two dateTimes for being the same date?

c# datetime equality
B. Clay Shannon picture B. Clay Shannon · Jun 19, 2012 · Viewed 50.4k times · Source

Possible Duplicate:
How to compare Dates in C#

This code of mine:

public static string getLogFileNameForDate(DateTime dt)
{
    if (dt.Equals(DateTime.Now))

...fails even when the two dates are the same (date) because dt is assigned a value at startup (e.g. "6/18/2012 15:19:42"), and so the dates are not exactly the same, even though the year, month, and day are the same (value of DateTime.Now may be, say, "6/18/2012 15:30:13").

I know I can test it this way:

if ((dt.Year.Equals(DateTime.Now.Year) && (dt.Month.Equals(DateTime.Now.Month) && (dt.Day.Equals(DateTime.Now.Day))

...but that seems a bit Jethro*-like

What is the accepted/preferred method (no pun intended)?

  • Clampett, not Tull

Answer

Brandon picture Brandon · Jun 19, 2012

Try

if (dt.Date == DateTime.Now.Date)

It will only take the date portion and the timestamp will be 12:00:00

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