输入正确的Double.Parse（“ string”）FormatException

Question

I'm trying to parse

Double.Parse(rowData[j++]).

The input sting is correct ("7,412"), j=123 so it worked until this point. All numbers are written with ",".

Even more if I type Double.Parse(rowData[j]) in watch it works.

What is the problem here?

Answer 1

You have comma instead of your decimal separator.

http://msdn.microsoft.com/en-us/library/3s27fasw

You should use AllowThousands NumberType if that's thousands separator

NumberStyles styles = NumberStyles.AllowThousands | NumberStyles.Float;
Double.Parse(value, styles);

Or you should replace your comma with . using string.Replace prior to parsing if that's considered decimal separator

Answer 2

According to MSDN you can try:

value = "4,320.64";
styles = NumberStyles.AllowThousands |
            NumberStyles.Float; 
number = Double.Parse(value, styles);