convert decimal to 2 decimal places c#

inputValue = Math.Round(inputValue, 2);

decimalVar.ToString ("#.##"); // returns "" when decimalVar == 0

or

decimalVar.ToString ("0.##"); // returns "0"  when decimalVar == 0

// just two decimal places
String.Format("{0:0.##}", 123.4567);      // "123.46"
String.Format("{0:0.##}", 123.4);         // "123.4"
String.Format("{0:0.##}", 123.0);         // "123"

//easy convert decimal to 2 decimal places 
ToString("N2"), or ToString("N")