Let's imagine a string with the following value: 12,126456
How do I convert the string to 12.12?
I need to convert, using C #, so that the final string has a maximum of two digits after the comma.
I tried String.Format("{0:#,00}", valor ) but it did not work.
Since you do not need rounding, simply use the string manipulation:
var valor = "12,126456";
var commaPosition = valor.IndexOf(",", StringComparison.Ordinal);
var result = commaPosition+3 > valor.Length ? valor: valor.Substring(0, commaPosition + 3);
See in .NETFiddle
Just convert to decimal, and then use the ToString by specifying the format.
using System;
using System.Globalization;
public class Program
{
public static void Main()
{
string numero = "12,126456";
decimal d;
if (decimal.TryParse(numero,NumberStyles.Any, CultureInfo.CreateSpecificCulture("pt-BR"), out d))
{
Console.WriteLine("Arredondado: " + d.ToString("N2"));
decimal t = Math.Truncate(d*100)/100;
Console.WriteLine("Truncado: "+ t.ToString("0.##"));
}
else
{
Console.WriteLine("Número inválido");
}
}
}
Result:
Rounded: 12.13
Truncated: 12.12
I put it in .NETFiddle: link
Decimal meuValor = 0;
String minhaString = "010,87147";
meuValor = Math.Round(Convert.ToDecimal(minhaString), 2);
I have not dealt with errors, your string must always contain a comma to work correctly. If you are using "CultureInfo (" en-US "), replace the comma to be a dot. Ex:
minhaString.Replace(",", ".")
Do this before assigning the value to the variable Decimal.