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摘要： DataTable dtStepX = new DataTable("dtStepX");DataTable dtStepS = new DataTable("dtStepS");//获取两个数据源的并集IEnumerable<DataRow> query = dtStepS.AsEnumerabl 阅读全文

摘要： string input = "hello WoRlD"; string result = Regex.Replace(input, "world", "csharp", RegexOptions.IgnoreCase); Console.WriteLine(result); // prints " 阅读全文