String Format for Double

Tutorial Link: Local Project: http://www.csharp-examples.net/string-format-double/


Digits after decimal point
This example formats double to string with fixed number of decimal places. For two decimal places use pattern „0.00“. If a float number has less decimal places, the rest digits on the right will be zeroes. If it has more decimal places, the number will be rounded.

Next example formats double to string with floating number of decimal places. E.g. for maximal two decimal places use pattern „0.##“.

Digits before decimal point
If you want a float number to have any minimal number of digits before decimal point use N-times zero before decimal point. E.g. pattern „00.0“ formats a float number to string with at least two digits before decimal point and one digit after that.

Align numbers with spaces
To align float number to the right use comma „,“ option before the colon. Type comma followed by a number of spaces, e.g. „0,10:0.0“ (this can be used only in String.Format method, not in double.ToString method). To align numbers to the left use negative number of spaces.