Conversion of string to datetime with specific format

Question

I have a string in the following format: 16Mar2009(mon), but I’m not getting to convert into datetime.

 string format = "dMMMyyyy(dd)";
 DateTime dt = DateTime.ParseExact("16Mar2009(mon)", format,CultureInfo.InvariantCulture);

Returns the following error:

String was not recognized as a Valid Datetime.

Answer 1

It had a basic format error, missing a letter d on the day and day of the week. It’s right:

DateTime.ParseExact("16Mar2009(mon)", "ddMMMyyyy(ddd)", CultureInfo.InvariantCulture)

Behold working in the ideone. And in the .NET Fiddle. Also put on the Github for future reference.

Reference: Custom Date and Time Format Strings