Get AM/PM for a date time in lowercase using only a datetime format

Question

I\'m to get a custom DateTime format including the AM/PM designator, but I want the \"AM\" or \"PM\" to be lowercase without making the rest of of the characters lo

Answer 1

You could split the format string into two parts, and then lowercase the AM/PM part, like so:

DateTime now = DateTime.Now;
string nowString = now.ToString("ffffdd, MMMM d, yyyy a\\t h:mm");
nowString = nowString + now.ToString("tt").ToLower();

However, I think the more elegant solution is to use a DateTimeFormatInfo instance that you construct and replace the AMDesignator and PMDesignator properties with "am" and "pm" respectively:

DateTimeFormatInfo fi = new DateTimeFormatInfo();

fi.AMDesignator = "am";
fi.PMDesignator = "pm";

string nowString = now.ToString("ffffdd, MMMM d, yyyy a\\t h:mmtt", fi);

You can use the DateTimeFormatInfo instance to customize many other aspects of transforming a DateTime to a string.