Question

I’m converting double to string this way: myDouble.ToString("0.0000000000000000") I’ve noticed that on some machines . is used as delimiter while on another machines , is used. I guess this depends on regional settings in Windows.

I use my output in another program which always expect ,to be as delimeter (regardless of current regional settings). So I want c# to force to always use , ignoring regional settings. How to do that?

Answer 1

You can use a custom NumberFormatInfo:

var nfi = new NumberFormatInfo();
nfi.NumberDecimalSeparator = ",";
var myDouble = 10.156d;
Console.WriteLine(myDouble.ToString("0.0000000000000000", nfi));

When created like this you’ll be extending the “invariant” formatting info.

The code above would output 10,1560000000000000 to the console.