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.
Related
This question already has answers here:
Convert integer to hexadecimal and back again
(11 answers)
How to Convert Hex String to Hex Number [duplicate]
(2 answers)
Closed 4 years ago.
I'm currently making a program which saves a bunch of memory addresses to a class automatically. However,
Convert.ToInt32(value)
doesn't seem to want to accept the string value "0xB24C" as a valid integer.
'Input string was not in a correct format.'
Actually I'm able to just save offsets as integers like this public const Int32 m_ArmorValue = 0xB24C;
Here's my code where I assign the integer;
hazedumper.netvars.m_ArmorValue = Convert.ToInt32(value);
value being the string offset "0xB24C"
Can anyone tell me why this error is occurring or is it not possible to convert a string memory address/hexadecimal value to an Int32.
Convert.ToInt32() takes the base as second parameter. Furthermore you must remove the 0x prefix. See the docs for details
var s="0xA123";
var i = Convert.ToInt32(s.Substring(2), 16);
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)
This question already has answers here:
Evaluating string "3*(4+2)" yield int 18 [duplicate]
(13 answers)
Closed 7 years ago.
I have a string with values stored as:
string formula = "(10.5+10.5)/(2*5)";
double a=convert.ToDouble((10.5+10.5)/(2*5)) is working fine but i need to solve it like double a=convert.ToDouble(formula). Is it possible? I'm geeting error input string is not in correct format.
You cannot simply pass a formula to Convert.ToDouble and expect that it will calculate it. You need to compute the formula.
The good way is to implement a parser, which will build an expression tree, and calcultate the value.
Another hacky solution is to utilize Compute method of DataTable:
System.Data.DataTable table = new System.Data.DataTable();
decimal result = (decimal)table.Compute(formula);
Note that it returns decimal object. You can now use Convert to make it double, if you need:
double resultDouble = Convert.ToDouble(result);
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);