将 Unicode 字符转换为 ASCII (.NET) 中最接近(最相似)的字符 [英] Convert Unicode char to closest (most similar) char in ASCII (.NET)

问题描述

如何将不同的 Unicode 字符转换为最接近的 ASCII 字符?就像 Ä -> A. 我用谷歌搜索但没有找到任何合适的解决方案.技巧 Encoding.ASCII.GetBytes("Ä")[0] 不起作用.(结果是?).

How do I to convert different Unicode characters to their closest ASCII equivalents? Like Ä -> A. I googled but didn't find any suitable solution. The trick Encoding.ASCII.GetBytes("Ä")[0] didn't work. (Result was ?).

我发现有一个 Encoder 类，它有一个 Fallback 属性，它完全适用于 char 无法转换的情况，但是实现 (EncoderReplacementFallback) 很愚蠢并转换为 ?.

I found that there is a class Encoder that has a Fallback property that is exactly for cases when char can't be converted, but implementations (EncoderReplacementFallback) are stupid and convert to ?.

有什么想法吗?

推荐答案

如果只是删除 变音符号，然后前往这个答案:

If it is just removing of the diacritical marks, then head to this answer:

static string RemoveDiacritics(string stIn) {
  string stFormD = stIn.Normalize(NormalizationForm.FormD);
  StringBuilder sb = new StringBuilder();

  for(int ich = 0; ich < stFormD.Length; ich++) {
    UnicodeCategory uc = CharUnicodeInfo.GetUnicodeCategory(stFormD[ich]);
    if(uc != UnicodeCategory.NonSpacingMark) {
      sb.Append(stFormD[ich]);
    }
  }

  return(sb.ToString().Normalize(NormalizationForm.FormC));
}

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