Why double.TryParse(“0.0000”, out doubleValue) ret

Question

I am trying to parse string "0.0000" with double.TryParse() but I have no idea why would it return false in this particular example. When I pass integer-like strings e.g. "5" it parses correctly to value of 5 .

Any ideas why it is happening ?

Answer 1

It works for me:

double temp = 0;
Console.WriteLine(double.TryParse("0.0000", out temp));
Console.ReadLine();

writes True.

Answer 2

To change the culture to something that has "." as decimal separator use:

Thread.CurrentThread.CurrentCulture = new CultureInfo("en-GB");

Answer 3

Almost certainly the problem is that Thread.CurrentCulture does not use dot as the decimal separator.

If you know that the number will be always formatted with dot as the decimal separator, use this code that utilizes the other overload of double.TryParse:

style = NumberStyles.Float | NumberStyles.AllowThousands;
culture = CultureInfo.InvariantCulture;
float num;
if (double.TryParse("0.0000", style, culture, out num)) {
    // whatever
}