This question already has answers here:
How do I parse a string with a decimal point to a double?
(19 answers)
Closed 6 years ago.
I am writing a program to get data from microcontroller to PC. The data is in float format. I tried to convert the string into float using Convert.ToSingle(string), but the conversion result is wrong:
"0.11" is converted to 11, sometimes 12.
"0.10" is converted to 10. etc
As you can see, it is losing the leading 0. , which is unexpected. How could this happen?
Your problem is culture specific. In some cultures float numbers are separated by a , and in some they are separated by a .
In your case
String a = "0,11";
Convert.ToSingle(a)
should result in your desired outcome of 0,11.
So you should explicitly specify a relevant culture that uses . as decimal separator. One possibility is the invariant culture which is based on the English language.
Try the following:
String a = "0.11";
Convert.ToSingle(a, CultureInfo.InvariantCulture)
Related
This question already has answers here:
Best way to parse float?
(11 answers)
Closed 12 months ago.
I want to convert a value from string to float in c#. the value definitely has precision(I mean .00 or .67 in this example. I don't know the word in English for sure) like "120.00" , "233.67"
and this is what I do for doing that
float existingValue = float.Parse(param[1].ToString());
param[1] contains the string value
but gives me error :
'Input string was not in a correct format.'
If I change the value from "120.00" to "120" it works fine
what is the problem for that?
You should use an overload of float.Parse method. Specify IFormatProvider as an argument (e. g. CultureInfo.InvariantCulture or a specifc one) or NumberStyles.
This question already has answers here:
Leave only two decimal places after the dot
(13 answers)
Closed 8 years ago.
I've this problem and can't find a solution.
This is super easy and i don't know why can't i find a solution.
Problem:
if a value returns for example "16.60", in c# i'll read "16.6", but i need 0 as well, because of paypal API, wich only accepts a value with no decimal numbers, or if it has to have decimal numbers the minimum and maximum must be 2.
So how can i make this?
i've tried this:
string value_f = "16,6";
decimal value_f_d = decimal.Parse(value_f);
value_f_d = (decimal)Math.Round(value_f_d, 2);
value_f = value_f_d.ToString("#.##");
value_f = value_f.Replace(',', '.');
i want this output: 16.60, but gives this: 16.6
string output = value_f_d.ToString("#.00", CultureInfo.InvariantCulture);
(using System.Globalization in your using declarations at the top)
This question already has answers here:
Using String Format to show decimal up to 2 places or simple integer
(18 answers)
Closed 9 years ago.
If I got decimal number like 14.50 and I want to be represented like decimal 10.2
0000000014.50
how can I do this?
Thank you
Use custom numeric format string:
var value = 14.50m;
string valueString = value.ToString("0000000000.00");
0 is a placeholder: Replaces the zero with the corresponding digit if one is present; otherwise, zero appears in the result string.
If you don't have an issue with the data type being converted to string then you could use Padding in c#.
Refer the link below :
http://msdn.microsoft.com/en-us/library/66f6d830(v=vs.100).aspx
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Parse a Number from Exponential Notation
Does Decimal.Parse() support scientific notation?
I am trying to convert such values as 1E-08 to a decimal in C# because decimals are the preffered datatype for handling funds yet I get an error upon decimal.Parse() "Input string was not in a correct format." wouldn't converting to float first and then to decimal defeat the purpose?
Yes, converting to float would indeed defeat the purpose. The good thing is, you don't have to do that here!
You can use an overload for Parse that takes a NumberStyles specifier:
decimal d = decimal.Parse("1E-08",
System.Globalization.NumberStyles.AllowExponent);
Of course, if you are merely specifying a hard-coded decimal, you can use the decimal literal format:
decimal d = 1E-08M;
You can try with :-
decimal x = decimal.Parse("1E-08", NumberStyles.Float);
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Leave only two decimal places after the dot
Formatting a float to 2 decimal places
If I have a float that consists of something like 153.2154879, is there any way to convert it to string but only show 4 decimal places? I know I can format it using "000.000", but the front number doesnt always have to be 3 digits. So is there a way to show all the front numbers (153), but only the first 4 characters after the point in a string?
Something like this should do:
your_number.ToString("0.####");
This will show a max of 4 decimal places.
I usually use a format string like "#0.0000".
You can use the C# function Math.Round function.
float a= 153.213456;
Math.Round(a,3);
this would round up the number to 153.213
then get convert it to string.