如何在C#中連接由foreach回圈大寫的文本？-有解無憂

using System;

class Program{
  public static void Main (string[] args){
    string Text = "the sentence which each word must be capitalized";
    string[] WordArray = new string[8];

    foreach (string Word in Text.Split(' ')){
      string CapitalizedFirstLetter = Word.Substring(0, 1).ToUpper();
      string RestOfWord = Word.Substring(1, Word.Length-1);
      string ConcatenatedWord = string.Concat(CapitalizedFirstLetter, RestOfWord);
    }
  }
}

我打算將每個單詞大寫并再次連接，但是，我無法連接它。我應該如何連接它？

uj5u.com熱心網友回復：

你可以試試這個

string text = "the sentence which each word must be capitalized";

var words = text.Split(" ");

for (var i = 0; i < words.Length; i  ) words[i] =  
Char.ToUpper(words[i][0]).ToString() words[i].Substring(1);

text = string.Join(" ", words);

uj5u.com熱心網友回復：

以防萬一，你可以這樣做：

string Text = "the sentence which each word must be capitalized";
Console.WriteLine(CultureInfo.InvariantCulture.TextInfo.ToTitleCase(Text));

輸出：

The Sentence Which Each Word Must Be Capitalized

uj5u.com熱心網友回復：

我建議使用正則運算式：

 using System.Text.RegularExpressions;

 ...

 string Text = "the sentence which (each!) word must BE capitalized";

 string result = Regex.Replace(Text, 
   @"\b\p{Ll}\p{L}*\b",
    match => {
      string word = match.Value;

      //TODO: Some logic if we want to capitalize the word
      // if (...) return word; 

      return CultureInfo.CurrentCulture.TextInfo.ToTitleCase(word);  
    }
 );

 Console.Write(result);

結果：

The Sentence Which (Each!) Word Must BE Capitalized

請注意，這BE是保留并(each!)轉換為(Each!)

模式解釋：

 \b     - word boundary 
 \p{Ll} - low case letter
 \p{L}* - zero or more letters
 \b     - word boundary

uj5u.com熱心網友回復：

一種略顯不雅的方法是跟蹤串列中的所有單詞，然后在最后加入。

using System;
using System.Collections.Generic;

class Program{
  public static void Main (string[] args){
    string Text = "the sentence which each word must be capitalized";
    string[] WordArray = new string[8];    //Unused
    List<string> WordsCapitalized = new(); //New line

    foreach (string Word in Text.Split(' ')){
      string CapitalizedFirstLetter = Word.Substring(0, 1).ToUpper();
      string RestOfWord = Word.Substring(1, Word.Length-1);
      string ConcatenatedWord = string.Concat(CapitalizedFirstLetter, RestOfWord);
      WordsCapitalized.Add(ConcatenatedWord); //new line
    }

    string FinalString = String.Join(" ", WordsCapitalized); //" " is delimiter between words
  }
}

這是基于您發布的代碼構建的，只是為了展示一種簡單的方法。這不一定是我從頭開始的方式。至少，如果這是我的代碼，我會清理它并減少這種方法中的變數數量。

uj5u.com熱心網友回復：

@Ufuk

如果您期望此輸出“每個單詞必須大寫的句子”。那么你的代碼看起來不錯。你已經完成了 95% 的作業。已經用大寫拆分，但您需要將它們存盤在某個地方。所以我創建了一個字串變數來存盤它們。我只寫了兩行。

class Program{
  public static void Main (string[] args){
    string Text = "the sentence which each word must be capitalized";
    string outputText="";

    foreach (string Word in Text.Split(' ')){
      string CapitalizedFirstLetter = Word.Substring(0, 1).ToUpper();
      string RestOfWord = Word.Substring(1, Word.Length-1);
      string ConcatenatedWord = string.Concat(CapitalizedFirstLetter, RestOfWord);
      outputText = outputText   " "   ConcatenatedWord ;
    }
  }
}

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