C#•2y ago

❔ error when converting string to long

System.FormatException: Input string was not in a correct format.

System.FormatException: Input string was not in a correct format.

you can see on image from what im trying to convert

public string ChangePercent24Hr { get; set; }
public long ChangePercent24HrD => long.Parse(ChangePercent24Hr);

public string ChangePercent24Hr { get; set; }
public long ChangePercent24HrD => long.Parse(ChangePercent24Hr);

15 Replies

DownOP•2y ago

string value: "-3.7193950756378277"

Pobiega•2y ago

Longs can't have decimals Are you thinking of double?

DownOP•2y ago

okay but tried this with double and didnt work either let me change it back to double

Pobiega•2y ago

Also, decimal parsing is culture specific

WhiteBlackGoose•2y ago

$invariantculture

MODiX•2y ago

In different cultures "," and "." are used for decimal points (and even other symbols sometimes). Here what you can write use Invariant culture (with dot):

float.Parse("1.2", CultureInfo.InvariantCulture)

float.Parse("1.2", CultureInfo.InvariantCulture)

Or use Try-pattern

using System.Globalization;
if (float.TryParse("1.2",  NumberStyles.Any, CultureInfo.InvariantCulture, out var res))
    Console.WriteLine($"Parsed! {res}");
else
    Console.WriteLine("Failed");

using System.Globalization;
if (float.TryParse("1.2",  NumberStyles.Any, CultureInfo.InvariantCulture, out var res))
    Console.WriteLine($"Parsed! {res}");
else
    Console.WriteLine("Failed");