突出显示多个关键字

Question

我试图突出显示 gridview.I 中的多个关键字，尝试使用 forloop 但它仅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;
    }

提前致谢。

这是输出我只得到关键字 "d" 得到突出显示我还需要突出显示关键字 "s"...

Answer 1

你能试试这样吗，而不是 1 乘 1 地循环搜索关键字

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
}

突出显示多个关键字

Highlighting the multiple keywords

c#

asp.net

highlight