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[英]“Exception thrown: 'System.FormatException' in Microsoft.SqlServer.Types.dll ” in ASP.NET console application C#
[英]convert multi variable from string to decimal in c#.net in asp.net threw an exception of type 'System.FormatException'
我有 2 个或可能超过 2 个字符串变量,如下所示
string a = csvalue[7].Replace(" ", ""); //a="120641"
string b = csvalue[9].Replace(" ", "") ;//b=""221707
decimal result = Convert.ToDecimal(a) + Convert.ToDecimal(b)
但它有例外:“抛出了'System.FormatException'类型的异常”
我试试
enter code here
string one = "120641";
string two = "221707";
string three = "123548";
Double iOne = 0;
Double iTwo = 0;
Double ithree = 0;
Double.TryParse(one, out iOne);
Double.TryParse(two, out iTwo);
Double.TryParse(three, out ithree);
它对 iOne 不起作用,iTwo 请帮助我
有一些(不可见的)unicode 字符不是数字,因此无法解析。 例如,您可以使用 Linq 和char.IsDigit
删除它们:
using System;
using System.Linq;
public class Program
{
public static void Main()
{
string one = "120641";
string two = "221707";
string three = "123548";
one = new string(one.Where(char.IsDigit).ToArray());
two = new string(two.Where(char.IsDigit).ToArray());
three = new string(three.Where(char.IsDigit).ToArray());
Double iOne = 0;
Double iTwo = 0;
Double ithree = 0;
Double.TryParse(one, out iOne);
Double.TryParse(two, out iTwo);
Double.TryParse(three, out ithree);
Console.WriteLine(iOne);
Console.WriteLine(iTwo);
Console.WriteLine(ithree);
}
}
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