I want to convert the following string to "5,28" to float number, I used this code but I got false result. Also I'm setting the device language to french.
Is there something I'm missing? I have tried to convert the string to different culture like CultureInfo("en-US") but still did not work.
bool result = float.TryParse("5,28", NumberStyles.Float,
CultureInfo.InvariantCulture.NumberFormat, out number);
InvariantCulture uses . as a NumberDecimalSeparator not ,
Since you forced to use Float style, this style includes only AllowDecimalPoint in a separator styles, your method thinks this , is a decimal separator but InvariantCulture does not use it. That's why you get exception.
There are a few things you can do. One option can be Clone an InvariantCulture, set NumberDecimalSeparator property to , and use that cloned culture in your TryParse method.
float f;
var clone = (CultureInfo)CultureInfo.InvariantCulture.Clone();
clone.NumberFormat.NumberDecimalSeparator = ",";
var result = float.TryParse("5,28", NumberStyles.Float, clone, out f); // true
Or you can use a culture that already has , as a NumberDecimalSeparator like tr-TR culture.1
float f;
var result = float.TryParse("5,28", NumberStyles.Float,
CultureInfo.GetCultureInfo("tr-TR"), out f); // true
1:Since I'm from Turkey :)
The reason that the value 5,28 does not parse is that invariant culture uses decimal dot ., not decimal comma.
To solve this problem you could either replace comma with a dot, like this
bool result=float.TryParse(
"5.28"
, NumberStyles.Float
, CultureInfo.InvariantCulture.NumberFormat
, out number);
or replace CultureInfo.InvariantCulture for a culture that uses comma in place of a dot:
bool result=float.TryParse(
"6,78"
, NumberStyles.Float
, new CultureInfo("de-DE").NumberFormat
, out number);
