1.数据分组求合,分别用的实体类以及datatable来分组求合,还有分组求和之后的如何取值 //实体类版本 List<ProgramTimeModel> TotalAllList = GetData(); var a = from p in TotalAllList.AsEnumerable() group p by p.ProgramTime_ID into g select new ProgramTimeModel { ProgramTime_ID = g.Key, Saled = g.…
序列化常用Attribute讲解说明 [XmlRootAttribute("MyCity", Namespace="abc.abc", IsNullable=false)] // 当该类为Xml根节点时,以此为根节点名称. public class City [XmlAttribute("AreaName")] // 表现为Xml节点属性.<... AreaName="..."/> public st…
实体类转换成XML方法: 将实体类转换成XML需要使用XmlSerializer类的Serialize方法,将实体类序列化 public static string XmlSerialize<T>(T obj) { using (System.IO.StringWriter sw = new StringWriter()) { Type t = obj.GetType(); System.Xml.Serialization.XmlSerializer serializer = new Syst…