Converting String To Float in C#

113

I am converting a string like "41.00027357629127", and I am using;

Convert.ToSingle("41.00027357629127");

or

float.Parse("41.00027357629127");

These methods return 4.10002732E+15.

When I convert to float I want "41.00027357629127". This string should be the same...

This question is tagged with c# .net string floating-point type-conversion

~ Asked on 2012-06-26 07:35:01

The Best Answer is


238

Your thread's locale is set to one in which the decimal mark is "," instead of ".".

Try using this:

float.Parse("41.00027357629127", CultureInfo.InvariantCulture.NumberFormat);

Note, however, that a float cannot hold that many digits of precision. You would have to use double or Decimal to do so.

~ Answered on 2012-06-26 08:01:07


24

First, it is just a presentation of the float number you see in the debugger. The real value is approximately exact (as much as it's possible).

Note: Use always CultureInfo information when dealing with floating point numbers versus strings.

float.Parse("41.00027357629127",
      System.Globalization.CultureInfo.InvariantCulture);

This is just an example; choose an appropriate culture for your case.

~ Answered on 2012-06-26 07:40:47


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