c＃Convert.ToDouble格式异常错误 [英] c# Convert.ToDouble format exception error

问题描述

我正在尝试将此字符串转换为double

I'm trying to convert this string to double

Convert.ToDouble（1.12）;

这是输出

System.FormatException未被处理。 p>

System.FormatException was unhandled.

我应该这样做吗？

    public static double ConvertToDouble(string ParseVersion)
    {
        double NewestVersion;
        try
        {
            NewestVersion = Convert.ToDouble(ParseVersion);
        }
        catch
        {
            ParseVersion = ParseVersion.Replace('.', ',');
            NewestVersion = Convert.ToDouble(ParseVersion);
        }

        return NewestVersion;
    }

    ConvertToDouble("1.12");

还是更容易解决？

推荐答案

double.Parse 将默认使用当前的文化。听起来你想要的是不变的文化：

double.Parse will use the current culture by default. It sounds like you want the invariant culture:

double d = double.Parse("1.12", CultureInfo.InvariantCulture);

编辑：只是为了清楚，显然你不应该使用这个，如果你试图解析用户在不同文化中输入的文字。当您收到不变文化中的数据（如大多数机器到机器数据基于文本的格式），并且要在解析时强制执行此操作，则可以使用此选项。

Just to be clear, obviously you shouldn't use this if you're trying to parse text entered by a user in a different culture. This is for use when you've received data in the invariant culture (as most machine-to-machine data text-based formats are) and want to enforce that when parsing.

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