Convert string to datetime

Question

1.00/5 (2 votes)

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Hi,

I got date from usb modem using at command.

and the formate is that "

Quote:
17/03/22,16:34:33+22

"

i want to convert string to datetime.

Thanks And Regards

What I have tried:

SMSRetPort.Open();

           SMSRetPort.Write("AT" + System.Environment.NewLine);
           Thread.Sleep(1000);

           //SMSRetPort.Write("AT+CTZU=1" + System.Environment.NewLine);
           //Thread.Sleep(1000);

           SMSRetPort.Write("AT+CMGF=1" + System.Environment.NewLine);
           Thread.Sleep(1000);

           SMSRetPort.Write("AT+CMGL=\"ALL\"\r" + System.Environment.NewLine);
           //SMSRetPort.Write("AT+CMGL=\"REC UNREAD\"\r" + System.Environment.NewLine); //"AT+CMGL=\"REC UNREAD\""
           Thread.Sleep(1000);

Posted 22-Mar-17 23:57pm

Member 12104335

Updated 23-Mar-17 7:01am

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3 solutions

Solution 2

Because you have a known fixed format you can use the DateTime.ParseExact Method (String, String, IFormatProvider) (System)[^].

The format string for your dates might be:

// 17/03/22,16:34:33+22
//string format = "dd/MM/yy,HH:mm:sszz";
string format = "yy/MM/dd,HH:mm:sszz";

But your example string looks suspicious (22 for ~~year and~~ timezone).
[EDIT]
If that is a day offset, remove it like explained in solution 1 and remove the "zz" part from the format string.
[/EDIT]

Posted 23-Mar-17 0:11am

Jochen Arndt

Updated 23-Mar-17 0:40am

v4

Comments

Member 12104335 23-Mar-17 6:20am

could you please eleborate?

Jochen Arndt 23-Mar-17 6:24am

Just follow the link and read. Regarding the format string there is a link to " Custom Date and Time Format Strings": https://msdn.microsoft.com/en-us/library/8kb3ddd4(v=vs.110).aspx

Or do you refer to the "22".
That year is in the future and not a valid time zone offset.

Pete O'Hanlon 23-Mar-17 6:31am

It's being read as YY/MM/DD so that's 22nd March 2017.

Jochen Arndt 23-Mar-17 6:38am

Uups.
Thank you Pete.

Pete O'Hanlon 23-Mar-17 6:46am

No problem.

Solution 3

To build on the answer from F-ES Sitecore, you can do this version if you don't want to split the string:

C#

public static void Main()
{
  string stringDateTime = "17/03/22,16:34:33+22";
  DateTime parsedDateTime;
  if (DateTime.TryParseExact(stringDateTime, "yy/MM/dd,HH:mm:ss+ff", CultureInfo.CurrentCulture, DateTimeStyles.AssumeUniversal, out parsedDateTime))
  {
    Console.WriteLine(parsedDateTime);
  }
  Console.ReadKey();
}

This prints out 22/03/2017 16:34:33

Posted 23-Mar-17 1:05am

Pete O'Hanlon

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F-ES Sitecore · Accepted Answer · 2017-03-23T00:06:00

Solution 1

C#

string s = "17/03/22,16:34:33+22";
            
s = s.Substring(0, s.IndexOf('+')); // remove the "+22"

DateTime dt;

DateTime.TryParseExact(s, "dd/MM/yy,HH:mm:ss", CultureInfo.CurrentCulture, DateTimeStyles.None, out dt);

Posted 23-Mar-17 0:06am

F-ES Sitecore

Comments

Member 12104335 23-Mar-17 6:18am

Error 1 'System.Windows.Forms.ColumnHeader' does not contain a definition for 'TryParseExact' and no extension method 'TryParseExact' accepting a first argument of type 'System.Windows.Forms.ColumnHeader' could be found (are you missing a using directive or an assembly reference?) D:\R&D\SMSapplication\SMSapplication\ReadSMS.cs 25 36 SMSapplication

F-ES Sitecore 23-Mar-17 6:46am

You do TryParseExact on DateTime, not your ColumnHeader. Load your actual value into the "s" variable and the rest will be unchanged.