float.Parse（）不工作，我想要的方式 [英] float.Parse() doesn't work the way I wanted

问题描述

我有一个文本文件，我用将信息输入到我的application.The问题是，有些值是浮动，有时他们都为空，这就是为什么我得到一个异常。

I have a text file,which I use to input information into my application.The problem is that some values are float and sometimes they are null,which is why I get an exception.

        var s = "0.0";
        var f = float.Parse(s);

上面的代码抛出第2​​行异常输入字符串的不正确的格式。

The code above throws an exception at line 2 "Input string was not in a correct format."

我相信解决办法是float.Parse的先进的重载，其中包括的IFormatProvider作为参数，但我不知道这件事呢。

I believe the solution would be the advanced overloads of float.Parse,which include IFormatProvider as a parameter,but I don't know anything about it yet.

我如何解析0.0？

推荐答案

点符号。不被用作分离器（这取决于文化设置）。所以，如果你想绝对确保点被正确解析，你需要这样写：

Dot symbol "." is not used as separator (this depends on Culture settings). So if you want to be absolutely sure that dot is parsed correctly you need to write something like this:

CultureInfo ci = (CultureInfo)CultureInfo.CurrentCulture.Clone();
ci.NumberFormat.CurrencyDecimalSeparator = ".";
avarage = double.Parse("0.0",NumberStyles.Any,ci);

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