String.format for removing zero after decimal

Question

String.Format("{0:0}",100.00) // Should show as 100 // This works fine
String.Format("{0:0}",0.5) // Should show as 0.5

But above String.Format("{0:0}" does not work.

Answer 1

如果分别需要100和0.5 ，我认为最简单的String.Format("{0}", myDouble )甚至myDouble.ToString()都可以工作。

Answer 2

You can use this format:

string.Format("{0:0.#####}", 0.5m)

This presumes that the number cannot have more than 5 decimal places.

Another way is to use the General ("G") Format Specifier :

string.Format("{0:G29}", 0.5m)

Answer 3

I think that you must use String.Format("{0: N2 }", your_number ). You only need to change N2 to N1 or N0 or whatever depending on how many decimals you want to display

Answer 4

I just tried with simple "{0}" as following
Console.WriteLine(String.Format("{0}",100.00));
Console.WriteLine(String.Format("{0}",0.5));
these result as you required. https://dotnetfiddle.net/J3FfOm