Question

I want to to format a double values like ###,###.00 and I’m trying the following code:

double num = 0.00;
Console.WriteLine("Value with two decimal places: " + 
                      "{0:###,###.00}", num); 

It works fine for all values except 0 or 0.00 etc. for 0 it outputs .00 whereas I want it to emit 0.00.

Answer 1

Then you should use this:

double num = 0.00;
Console.WriteLine("Value with two decimal places: " + 
                      "{0:###,##0.00}", num); 

0 means: Always print a digit at this place, whether it exits or not. Prints 0 if it doesn’t exist.
# means: Only print a digit at this place, if it really exists.