如何从句子的特定单词中删除特殊字符 [英] How can I remove special characters from a specific word of a sentence

问题描述

我如何能够从句子中的单词中删除像撇号这样的特殊字符，例如



而不是----- Hello'big'world < br $> b $ b

我希望它是----------你好大世界



< b>我尝试了什么：



尝试附上这样的字眼

How will i be able to remove special character like apostrophe from a word in a sentence like

instead of ----- Hello 'big' world

I want it to be ---------- Hello big world

What I have tried:

tried appending the words like this

StringBuilder sb = new StringBuilder();
   foreach (char c in strMyString) {
      if ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') | || (c >= 'a' && c <= 'z') ) {
         sb.Append(c);
      }
   }
   return sb.ToString();
}

推荐答案

private readonly char[] validCharacters
    = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890- ".ToCharArray();

public string StripCharacters(string input, char[] validChars)
{
    return input.ToCharArray()
                .Where(c => validChars.Contains(c))
                .Aggregate(new StringBuilder(), (current, next)
                    => current.Append(next), sb => sb.ToString());
}

使用：

To use:

var cleaned = StripCharacters("instead of ----- Hello 'big' world", validCharacters);

输出：

Outputs:

instead of ----- Hello big world

这使您可以更好地控制要保留的字符以及要删除的字符。

This gives you greater control over which characters to keep, and which to strip.

使用正则表达式：

Use a Regex:

public static Regex removeSpecials = new Regex(
      "[^\w\s-]",
    RegexOptions.CultureInvariant
    | RegexOptions.Compiled
    );
...
    string result = removeSpecials.Replace(InputText,"");

空格和连字符添加，0-9a-zA-Z替换为\w - OriginalGriff [/ edit]

[edit]Space and hyphen added, 0-9a-zA-Z replaces with \w - OriginalGriff[/edit]

首先看，你忘了在过滤中允许空格 if 。

On first look, you forgot to allow spaces in the filtering if.

(c == ' ')

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