c# - 从大文本文件中读取 unicode 字符

Question

如何读取unicode字符？像“ä”

public static string Read(int length, string absolutePath)
{
    StringBuilder resultAsString = new StringBuilder();

    using (MemoryMappedFile memoryMappedFile = MemoryMappedFile.CreateFromFile(absolutePath))
    using (MemoryMappedViewStream memoryMappedViewStream = memoryMappedFile.CreateViewStream(0, length))
    {
        for (int i = 0; i < length; i++)
        {                  
            int result = memoryMappedViewStream.ReadByte();

            if (result == -1)
            {
                break;
            }
            char letter = (char)result;

            resultAsString.Append(letter);
        }
    }

    return resultAsString.ToString();
}

读取的 int(结果)是 195，char 转换给我的不是预期的结果。

Answer 1

不确定这是否是您要求的，但是，您可以使用 StreamReader

StreamReader sr = new StreamReader(stream, Encoding.Unicode);