替换指定文本的方法

 替换指定文本的方法,j将Sentence与word 相同的字符替换成‘_’,自己挖坑,做个笔记!

private static string Replace(string Sentence, string Word)
        {
            int Start = Sentence.IndexOf(Word, StringComparison.CurrentCultureIgnoreCase);
            if (Start >= 0)
            {
                char[] Sen = Sentence.ToCharArray();
                for (int x = Start; x < Word.Length + Start; x++)
                {
                    Sen[x] = '_';
                }

                StringBuilder sb = new StringBuilder();
                return sb.Append(Sen).ToString();
            }
            else
            {
                return Sentence;
            }
        }