.net - 如何在.Net中获取Windows文件系统路径的所有有效文件夹和文件字符列表

Question

System.IO.Path.GetInvalidPathChars()给出无效字符列表。

但我需要列出所有有效字符。

想到的第一个简单的想法是从 0 迭代到 255 并排除无效字符，但它只会给出有效字符吗？还有 Unicode 呢？我应该从 0 迭代到 65535 吗？

Answer 1

AFAIK .NET 中没有任何东西可以获取此信息。

您可以查看以下微软页面：http: //msdn.microsoft.com/en-us/library/windows/desktop/aa365247%28v=vs.85%29.aspx

相关摘录：

Use any character in the current code page for a name, including Unicode characters and characters
in the extended character set (128–255), except for the following:

    The following reserved characters:

        < (less than)  
        > (greater than)
        : (colon)
        " (double quote)
        / (forward slash)
        \ (backslash)
        | (vertical bar or pipe)
        ? (question mark)
        * (asterisk)

    Integer value zero, sometimes referred to as the ASCII NUL character.

    Characters whose integer representations are in the range from 1 through 31,
    except for alternate data streams where these characters are allowed.

    Any other character that the target file system does not allow.

Answer 2

这个怎么样：

    private static IEnumerable<char> GetValidFileNameChars()
    {
        var invalidChars = new List<char>(System.IO.Path.GetInvalidFileNameChars());
        var allChars = new List<char>();
        for (var i = 0; i < 255; i++)
        {
            allChars.Add((char) i);
        }

        var validChars = allChars.AsEnumerable().Except(invalidChars.AsEnumerable());
        return validChars;
    }

或者，您可以从 0 迭代到 65535 ( char.MinValueto char.MaxValue)。