Time difference in C#

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scenario is there is a drive and in that drive there is a files which is automatically created in every 4 mints so i fetch this date time in in this code

now i want to insert data in db that when any file not created within 4 mint then i want to insert data in db

data is sent to db but problem is this data not send when 4 mint is over and i want this condition

What I have tried:

code

C#

try
               {
                   string abc= "";
                   abc= ConfigurationManager.AppSettings.Get("abc");


                   DateTime dattme= File.GetLastAccessTime(abc);


                   Console.WriteLine("the last access time for  c {0}", dattme);

                   if(DateTime.Now.Minute > 4)
                   {
                       DataClasses1DataContext db = new DataClasses1DataContext();
                       tbl_OutBox tb = new tbl_OutBox();
                       tb.ToSIM_No = "+234234324";
                       tb.ToText = "Check please";
                       tb.FromSIM_No = "+234234324";
                       tb.FromText = "Check please";
                       db.tbl_OutBoxes.InsertOnSubmit(tb);
                       db.SubmitChanges();

                   }





               }
               catch (Exception e)
               {
                   Console.WriteLine("The process failed: {0}", e.ToString());
               }
               Thread.Sleep(5000);
           }
       }

how to solve

Posted 11-May-16 0:44am

super_user

Updated 11-May-16 0:58am

CHill60

v2

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2 solutions

Solution 2

Try something like

C#

if(DateTime.Now.Subtract(dattme).Minutes > 4)

Subtract gives you an object of Timespan class and u can check the minutes in it

Posted 11-May-16 0:58am

Member 10752487

Comments

George Jonsson 11-May-16 7:03am

The problem with using the Minutes property is that if the time difference is, for example, 1 hour and 1 minute, the Minutes property will be equal to 1.
So then the if statement will not be entered, even though the file is 61 minutes old.

glen205 11-May-16 7:31am

Timespan TotalMinutes property should address this, rather than using Minutes?

George Jonsson 11-May-16 7:33am

Yep. See TimeSpan.TotalMinutes Property (System)[^]

super_user 11-May-16 7:36am

george please explain briefly

George Jonsson 11-May-16 8:56am

What do you need to be explained?

glen205 12-May-16 3:02am

Timespan is a type containing a period of time between two fixed times. e.g. Timespan from 10:05am to 12:15pm is 2 hrs, 10 minutes.

That Timespan has the properties:
Hours: 2
Minutes: 10
Seconds: 0

but also:
Total Minutes = 130 (2hrs * 60 plus another 10)
Total Seconds = 7800 (130 * 60)

These properties are designed to solve your problem exactly i.e. "How many minutes long it this timespan?"

George's link to the MSDN documentation explains this.

super_user 13-May-16 0:51am

ok thanku

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George Jonsson · Accepted Answer · 2016-05-11T00:57:00

Solution 1

I think you have forgotten the little detail of subtracting two times from each other.
Right now you are just taking an arbitrary time and check the Minute part.

Try

C#

TimeSpan timeDiff = DateTime.Now - File.GetLastAccessTime(abc);
if (timeDiff.TotalMinutes > 4)
{
    ...
}

Posted 11-May-16 0:57am

George Jonsson

Updated 11-May-16 0:58am

v2

Comments

BillWoodruff 11-May-16 9:43am

+5

George Jonsson 11-May-16 18:33pm

Thanks Bill.

Sergey Alexandrovich Kryukov 11-May-16 13:02pm

5ed.
—SA

George Jonsson 11-May-16 18:33pm

Thanks Sergey.