CODEWITHSUNDEEP
c#windows-phone-7datetimewindows-phone-8
Developer
Developer

Reputation: 4321

DateTime Format Handling

I have a program that has synchronization. That means I need to save the last synchronization date and check if it needs to be synchronized.

So, I have this:

IS.SaveContactsRetrieveDate(DateTime.Now.ToString("dd.MM.yyyy"));

Saving a date to Isolated Storage.

Then, when I call IF:

DateTime toDate = DateTime.Now;

string contactsRetriveDate = IS.ReadContactsRetriveDate();
if (contactsRetriveDate == "" || DateTime.Compare(toDate, DateTime.Parse(contactsRetriveDate)) == 1)
{
    MessageBox.SHow("");
}

The problem is that when user changes the region code fails here:

DateTime.Compare(toDate, DateTime.Parse(contactsRetriveDate))

With incorrect input error.

I understand that Latvian format is dd.MM.yyyy and USA MM/dd/yyyy - but I can't find a solution...

I need all datetime parsed in one format, so I could add days, weeks and compare date.

Upvotes: 2

Views: 257

Answers (3)

Clemens
Clemens

Reputation: 128061

You should serialize and deserialize your date in a culture-independent manner (where "d" is the "Short date pattern" of the Standard Date and Time Format Strings):

var s = DateTime.Now.ToString("d", CultureInfo.InvariantCulture);
var d = DateTime.Parse(s, CultureInfo.InvariantCulture);

Upvotes: 2

Asif Mahamud
Asif Mahamud

Reputation: 583

u can try this one:

 DateTime toDate = DateTime.Now;

                string contactsRetriveDate = IS.ReadContactsRetriveDate();
                DateTime contactsRetriveDat = Convert.ToDateTime(contactsRetriveDate);
                if (contactsRetriveDate == "" || toDate.CompareTo(contactsRetriveDat)==0)
                {
                    MessageBox.SHow("");
                }

Upvotes: 1

Sriram Sakthivel
Sriram Sakthivel

Reputation: 73452

You can use ParseExact

DateTime.ParseExact(datestring, "dd.MM.yyyy", System.Globalization.CultureInfo.InvariantCulture);

you already know format so you can go for this, but make sure the string is in same format and never changes.

Upvotes: 1

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