Converting String to Float in C#

Converting String To Float in C#

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.

Convert a string to float

There are a lot of problems using floats. I tend to use doubles, which does the same thing(?)

When I run:

var inputString = "123.46.789-01";
var strippedString = inputString.Replace(".", "").Replace("-", "");
float floatValue = float.Parse(strippedString);

I get the value: 1,234679E+09 which is an alternative way of displaying 1234678901.

Confirm by adding this line to the code:

double doubleValue = Convert.ToDouble(floatValue);

and you'll get 1234678901.

Convert string to double or float c#

I suspect your default culture info uses comma as a decimal separator instead of dot. If you know your input will have a dot, it's best to specify the invariant culture explicitly:

double d1 = double.Parse(s1, CultureInfo.InvariantCulture);
double d2 = double.Parse(s2, CultureInfo.InvariantCulture);

However, if the decimal values matter, you should consider using decimal instead of either float or double:

decimal d1 = decimal.Parse(s1, CultureInfo.InvariantCulture);
decimal d2 = decimal.Parse(s2, CultureInfo.InvariantCulture);

C# String to Float Conversion

You need to pass the CultureInfo for the culture that the strings are formatted in.

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

The example from MSDN would be:

double number;

string value = "1,097.63";
NumberStyles style = NumberStyles.Number | NumberStyles.AllowCurrencySymbol;
CultureInfo culture = CultureInfo.CreateSpecificCulture("en-US");
if (Double.TryParse(value, style, culture, out number))
   Console.WriteLine("Converted '{0}' to {1}.", value, number);
else
   Console.WriteLine("Unable to convert '{0}'.", value);

Alternatively, if your input strings are formatted differently then use CultureInfo.CurrentCulture

Convert String to Float in ASP.Net Controller

@Sxntk say to me in the comment,

Your decimal separator isn't "." It is a "," That's your local enviroment settings. It should work with "7,8"

Converting string to float issue

If your string uses dot (.) as decimal separator, you should use this overload:

 float xFreq = Convert.ToSingle(param, CultureInfo.InvariantCulture);

Not really sure, but Additional information looks Slavic to me and the default decimal separator might be comma (,) instead of dot. Of course, this depends on the culture of the current thread which depends on Regional settings.

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