Error while writing Date to Image MetaData in C#-String was not recognized as a valid DateTime

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Im trying to write metadata to images using the following code.But when i try to add the date field an error is thrown String was not recognized as a valid DateTime

using (Stream bitmapStream = File.Open(fileName, FileMode.Open, 

Here Date is the value obtained from DatePicker.

date.tostring()->29/01/2015 06:35:13 PM

date.ToShortDateString()-> 29/01/2015

Stack Trace:
A first chance exception of type 'System.FormatException' occurred in mscorlib.dll
   at System.DateTimeParse.Parse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles)
   at System.Convert.ToDateTime(String value, IFormatProvider provider)
   at System.Windows.Media.Imaging.BitmapMetadata.set_DateTaken(String value)
   at myprogram.Main.worker_DoWork(Object sender, DoWorkEventArgs e)  

Based on the exception and the example in the documentation, I suspect you need to format this as a US short date. The simplest way of doing this is probably just to use the invariant culture. For example:

metadata.DateTaken = date.ToString("d", CultureInfo.InvariantCulture)

(Frankly it's a shame that it's a string property rather than a DateTime, but there we go...)

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I note that this field should be able to support hours, minutes, and seconds. Currently this code works for me.

metadata.DateTaken = DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss");

For reference, I haven't specified an IFormatProvider, though my locale is en-GB.

The System.FormatException comes from assignment to the DateTaken property, though our overlords at Microsoft haven't decreed to document what format it wants to be in. Hopefully underneath it's locale-invariant.

Doing this, the date is correctly stored in metadata and accessible as you would expect in Windows.

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Rather amusingly, when you set the property it requires the specific format "yyyy/MM/dd HH:mm:ss", but when you get it the format is the system's current one.

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Comments
  • Please format your code when you post - it's really hard to read at the moment. Also, most of it is completely irrelevant to your issue. It would really help if you'd post a short but complete program demonstrating the problem (and only the problem).
  • @JonSkeet Sorry.Tried my best to format the code.Its not aligning properly.Needed to add the code formatting again and again.Will try to improve.
  • It's just spaces... it's really not hard to fix. (I don't think you're using tabs...)
  • @JonSkeet Yeah.But i need to break a long line and put it below,right? for example :ecoder=BitmapDecoder.Create................. otherwise it will be hard to scroll to the right
  • Look at my edit. It's much more readable. Where you've got long lines, I'd manually break them into multiple lines at appropriate points (e.g. parameter separators) anyway. (See my example with the decoder assignment.) Now, which line is failing? Please post the full stack trace.
  • Thanks a lot :) This Solved the issue.