c# format number with 2 decimal places code example

Example 1: c# double value with 2 decimal places

inputValue = Math.Round(inputValue, 2);

Example 2: c# format string with 2 decimals

// just two decimal places
String.Format("{0:0.00}", 123.4567);      // "123.46"
String.Format("{0:0.00}", 123.4);         // "123.40"
String.Format("{0:0.00}", 123.0);         // "123.00"

Example 3: c# format string with 2 decimals

// at least two digits before decimal point
String.Format("{0:00.0}", 123.4567);      // "123.5"
String.Format("{0:00.0}", 23.4567);       // "23.5"
String.Format("{0:00.0}", 3.4567);        // "03.5"
String.Format("{0:00.0}", -3.4567);       // "-03.5"

Example 4: decimal c# 2 digits

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