Custom formating : Datetime, string

This is most of the time sufficient when you need to format date/time.

DateTime.Now.ToString("dd-MMM-yyyy | hh:mm tt");

many times you need to convert string to Datetime and there might be some issues related to Regional settings, so in those cases an easy example is

DateTime dt = DateTime.Parse("11/16/2009 7:51:45 PM", new CultureInfo("en-US"));

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If you want to display string upto some decimal places always, do this

int tempInt = 24;
string tempStr = tempInt.ToString("D3");