Question

我有一个字典集合，用于存储文本文件的起始位置和字符值。

例如：示例文本文件（a.txt）可能包含这样的文字“你好吗？你怎么做？”

我已将以上文字编入索引如下

Dictionary<long,string> charLocation = new Dictionary<long,string>(); 

charLocation[0] = "how" 
charLocation[1] = "ow" 
charLocation[2] = "w" 
charLocation[4] = "are" 
charLocation[6] = "e" 
charLocation[5] = "re" 
charLocation[11] = "?" 
charLocation[9] = "ou?" 
charLocation[10] = "u?" 
charLocation[8] = "you?" 
charLocation[13] = "how" 
charLocation[14] = "ow" 
charLocation[15] = "w" 
charLocation[17] = "do" 
charLocation[18] = "o" 
charLocation[21] = "ou" 
charLocation[22] = "u" 
charLocation[20] = "you" 
charLocation[26] = "?" 
charLocation[24] = "do?" 
charLocation[25] = "o?"

现在，我想强调文本文件中每次出现“how”或“do”。

为此，我想首先在字典集合中查找并查找字符串的每次出现，然后打开文本文件并突出显示每次出现的文本。

我该怎么做？

Answer 1

未经测试，但这应该有效。

public string HighLight (int startPoint, string text, string word)
{
  if (startPoint > = 0)
  {
    int startIndex = text.indexOf (word, startPoint);
    if (startIndex >= 0)
    {
      StringBuilder builder = new StringBuilder ();
      builder.Append (text.Substring ( 0, startIndex));
      builder.Append ("<strong>");
      builder.Append (text.Substring (startIndex + 1, word.Length));
      builder.Append ("</strong>");
      builder.Append (text.Substring (startIndex + word.Length + 1));
      return HighLight ((startIndex + "<strong>".Length + "</strong>".Length + word.Length, builder.ToString (), word);
    }
  }

  //Word not found.
  return text;
}

所以你可以这样做：

string myText = "how are you? how do you do?";
string hightLightedText = HighLight (0, myText, "how");

如果我的代码没有错误，那么会返回“你是的方式吗？你怎么办？”

然后，您可以使用想要“突出显示”文字的观察者重新和。

如何突出显示文本文件中的背景文本？

1 个答案: