Programming Forums > Application Development > C#

King · Jun 4th, 2006, 11:36 PM

I have 2 questions about datetimes in C#. First, I want to compare the current date and time to a date and time I have previously defined to see if they match. I compare the dates once a minute using a timer. My problem is the 2 times never match because the seconds don�t match. When I define the datetime I want to compare to the current datetime, I set the seconds to 00, but when the timer compares the current time to that, chances are it wont be right on the minute so they won't match. Here is the code I am using:

(Toggle Plain Text)

// "date" is my already defined date
if (System.DateTime.Now == date)
{
     // do stuff
}

Is there a way to compare the date and time excluding the seconds? I figured out a way to do it, but I was hoping to do it without such a big If statement. Here is how I did it:

(Toggle Plain Text)

// "date" is my already defined date
if ((System.DateTime.Now.Year == date.Year)
                && (System.DateTime.Now.Month == date.Month)
                && (System.DateTime.Now.Day == date.Day)
                && (System.DateTime.Now.Minute == date.Minute))
{
     // do stuff
}

My second question is how do I subtract say 10 minutes off an already defined datetime variable?

Thanks in advanced!

Jun 4th, 2006, 11:36 PM	#1
King Professional Programmer Join Date: Jan 2006 Location: Ontario, Canada Posts: 378 Rep Power: 3	C# Datetime data types I have 2 questions about datetimes in C#. First, I want to compare the current date and time to a date and time I have previously defined to see if they match. I compare the dates once a minute using a timer. My problem is the 2 times never match because the seconds don�t match. When I define the datetime I want to compare to the current datetime, I set the seconds to 00, but when the timer compares the current time to that, chances are it wont be right on the minute so they won't match. Here is the code I am using: (Toggle Plain Text) // "date" is my already defined date if (System.DateTime.Now == date) { // do stuff } // "date" is my already defined date if (System.DateTime.Now == date) { // do stuff } Is there a way to compare the date and time excluding the seconds? I figured out a way to do it, but I was hoping to do it without such a big If statement. Here is how I did it: (Toggle Plain Text) // "date" is my already defined date if ((System.DateTime.Now.Year == date.Year) && (System.DateTime.Now.Month == date.Month) && (System.DateTime.Now.Day == date.Day) && (System.DateTime.Now.Minute == date.Minute)) { // do stuff } // "date" is my already defined date if ((System.DateTime.Now.Year == date.Year) && (System.DateTime.Now.Month == date.Month) && (System.DateTime.Now.Day == date.Day) && (System.DateTime.Now.Minute == date.Minute)) { // do stuff } My second question is how do I subtract say 10 minutes off an already defined datetime variable? Thanks in advanced! __________________ I am Addicted to Linux!

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Programming Forums > Application Development > C#

C# Datetime data types