String was not recognized as a valid DateTime.

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C#

i am getting error in b.Dob = DateTime.Parse(txtdob.Text);

Posted 25-Oct-13 23:52pm

sanjaysgh

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Kenneth Haugland 26-Oct-13 6:21am

With what? I cant tell whats wrong here, so whats in b.Dob?

sanjaysgh 26-Oct-13 6:24am

b.Dob = DateTime.Parse(txtdob.Text);
when i debug program i am getting exception that String was not recognized as a valid DateTime.

Kenneth Haugland 26-Oct-13 6:26am

I assume that b is a class, and Dob is a property in the class, so what does the class b look like?

Kenneth Haugland 26-Oct-13 6:26am

Use TryParse instead....

sanjaysgh 26-Oct-13 6:29am

getting error while using tryparse asking for 2 arguments

sanjaysgh 26-Oct-13 6:32am

actauly is this when i am trying to insert date like 10/25/2013 than getiing error and when i tring to insert 25-10-2013 or 10-25-2013 than it insert successfully.....

Kenneth Haugland 26-Oct-13 6:33am

As for tryparse have a look at the documentation, I'll bet its an example there.

Then we need to know what culture setting your system? What values are given in the textbox? Whay are you not using a calanderpicker instead, its much seafer...

sanjaysgh 26-Oct-13 6:35am

ofcourse sir i am using datepicker here

Richard MacCutchan 26-Oct-13 6:26am

What is the actual value you are trying to parse?

sanjaysgh 26-Oct-13 6:32am

actauly is this when i am trying to insert date like 10/25/2013 than getiing error and when i tring to insert 25-10-2013 or 10-25-2013 than it insert successfully.....

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Kenneth Haugland · Answer 1 · 2013-10-26T00:46:00

IF you look in the documentation[^] there is an example that would solve your problem.

The code:

C#

CultureInfo enUS = new CultureInfo("en-US"); 
string dateString;
DateTime dateValue;

// Parse date with no style flags.
dateString = " 5/01/2009 8:30 AM";
if (DateTime.TryParseExact(dateString, "g", enUS, 
                           DateTimeStyles.None, out dateValue))
   Console.WriteLine("Converted '{0}' to {1} ({2}).", dateString, dateValue, 
                     dateValue.Kind);
else
   Console.WriteLine("'{0}' is not in an acceptable format.", dateString);

// Allow a leading space in the date string. 
if (DateTime.TryParseExact(dateString, "g", enUS, 
                           DateTimeStyles.AllowLeadingWhite, out dateValue))
   Console.WriteLine("Converted '{0}' to {1} ({2}).", dateString, dateValue, 
                     dateValue.Kind);
else
   Console.WriteLine("'{0}' is not in an acceptable format.", dateString);

// Use custom formats with M and MM.
dateString = "5/01/2009 09:00";
if (DateTime.TryParseExact(dateString, "M/dd/yyyy hh:mm", enUS, 
                           DateTimeStyles.None, out dateValue))
   Console.WriteLine("Converted '{0}' to {1} ({2}).", dateString, dateValue, 
                     dateValue.Kind);
else
   Console.WriteLine("'{0}' is not in an acceptable format.", dateString);

// Allow a leading space in the date string. 
if (DateTime.TryParseExact(dateString, "MM/dd/yyyy hh:mm", enUS, 
                        DateTimeStyles.None, out dateValue))
   Console.WriteLine("Converted '{0}' to {1} ({2}).", dateString, dateValue, 
                     dateValue.Kind);
else
   Console.WriteLine("'{0}' is not in an acceptable format.", dateString);

// Parse a string with time zone information.
dateString = "05/01/2009 01:30:42 PM -05:00"; 
if (DateTime.TryParseExact(dateString, "MM/dd/yyyy hh:mm:ss tt zzz", enUS, 
                        DateTimeStyles.None, out dateValue))
   Console.WriteLine("Converted '{0}' to {1} ({2}).", dateString, dateValue, 
                     dateValue.Kind);
else
   Console.WriteLine("'{0}' is not in an acceptable format.", dateString);

// Allow a leading space in the date string. 
if (DateTime.TryParseExact(dateString, "MM/dd/yyyy hh:mm:ss tt zzz", enUS, 
                        DateTimeStyles.AdjustToUniversal, out dateValue))
   Console.WriteLine("Converted '{0}' to {1} ({2}).", dateString, dateValue, 
                     dateValue.Kind);
else
   Console.WriteLine("'{0}' is not in an acceptable format.", dateString);

// Parse a string represengting UTC.
dateString = "2008-06-11T16:11:20.0904778Z";
if (DateTime.TryParseExact(dateString, "o", CultureInfo.InvariantCulture, 
                               DateTimeStyles.None, out dateValue))
   Console.WriteLine("Converted '{0}' to {1} ({2}).", dateString, dateValue, 
                     dateValue.Kind);
else
   Console.WriteLine("'{0}' is not in an acceptable format.", dateString);

if (DateTime.TryParseExact(dateString, "o", CultureInfo.InvariantCulture, 
                           DateTimeStyles.RoundtripKind, out dateValue))
   Console.WriteLine("Converted '{0}' to {1} ({2}).", dateString, dateValue, 
                     dateValue.Kind);
else
   Console.WriteLine("'{0}' is not in an acceptable format.", dateString);

// The example displays the following output: 
//    ' 5/01/2009 8:30 AM' is not in an acceptable format. 
//    Converted ' 5/01/2009 8:30 AM' to 5/1/2009 8:30:00 AM (Unspecified). 
//    Converted '5/01/2009 09:00' to 5/1/2009 9:00:00 AM (Unspecified). 
//    '5/01/2009 09:00' is not in an acceptable format. 
//    Converted '05/01/2009 01:30:42 PM -05:00' to 5/1/2009 11:30:42 AM (Local). 
//    Converted '05/01/2009 01:30:42 PM -05:00' to 5/1/2009 6:30:42 PM (Utc). 
//    Converted '2008-06-11T16:11:20.0904778Z' to 6/11/2008 9:11:20 AM (Local). 
//    Converted '2008-06-11T16:11:20.0904778Z' to 6/11/2008 4:11:20 PM (Utc).