摘要：1、抓取一般内容需要三个类：WebRequest、WebResponse、StreamReader所需命名空间：System.Net、System.IO核心代码：view plaincopy to clipboardprint?WebRequestrequest=WebRequest.Create("http://www.cftea.com/");WebResponseresponse=request.GetResponse();StreamReaderreader=newStreamReader(response.GetResponseStream(),Encoding. 阅读全文

摘要：DataTable DataTable1 = SqlHelper.GetDataTable("select convert(char(5),id) As 'id' ,num from testSum"); DataTable DataTable2 = SqlHelper.GetDataTable("select '统计',Sum(num) from testSum"); DataTable newDataTable = DataTable1.Clone(); object[] obj = new object[newDat 阅读全文