突出显示多个关键字

Question

我试图突出显示 gridview 中的多个关键字。我尝试使用 forloop，但它只突出显示数组中的第一项。

    protected string HighlightText(string searchWord, string inputText)
    {

        // string[] strArray = new string[] { "Hello", "Welcome" };
        string s = "d,s";
        // Split string on spaces.
        // ... This will separate all the words.
        string[] words = s.Split(',');

        for (int i = 0; i < words.Length; i++)
        {
            //Console.WriteLine(word);
            searchWord = words[i];
            Regex expression = new Regex(searchWord.Replace(" ", "|"), RegexOptions.IgnoreCase);
            return expression.Replace(inputText, new MatchEvaluator(ReplaceKeywords));
        }
        return string.Empty;
    }

提前谢谢。

这是我只得到关键字“d”被突出显示的输出我还需要突出显示关键字“s”......

Answer 1

你能不能试试这样，而不是循环关键字 1 by 1

string inputText = "this is keyword1 for test and keyword4 also";

Regex keywords= new Regex("keyword1|keyword2|keyword3|keyword4");
kewyords = kewyords.Replace("|", "\b|\b"); //or use \b between keywords

foreach (Match match in keywords.Matches(inputText))
{
   //get match.Index & match.Length for selection and color it
}