08:55:14 2012-03-19 public static class XmlHelper    {        #region 实体类序列化成xml        /// 
        ///  实体类序列化成xml        /// 
        /// The enitities.        /// The headtag.        /// 
             public static string ObjListToXml
     
      (List
      
        enitities, string headtag)        {            StringBuilder sb = new StringBuilder();            PropertyInfo[] propinfos = null;            sb.AppendLine("
       ");            sb.AppendLine("<" + headtag + ">");            foreach (T obj in enitities)            {                //初始化propertyinfo                if (propinfos == null)                {                    Type objtype = obj.GetType();                    propinfos = objtype.GetProperties();                }                sb.AppendLine("
       
        ");                foreach (PropertyInfo propinfo in propinfos)                {                    sb.Append("<");                    sb.Append(propinfo.Name);                    sb.Append(">");                    sb.Append(propinfo.GetValue(obj, null));                    sb.Append("
        ");                }                sb.AppendLine("
       ");            }            sb.AppendLine("
       ");            return sb.ToString();        }        #endregion        #region 使用XML初始化实体类容器        /// 
       
        ///  使用XML初始化实体类容器        /// 
        /// 
               /// 
       The typename.        /// 
       The XML.        /// 
       The headtag.        /// 
               public static List
       
         XmlToObjListByNode
        
         (string xml, string headtag)           where T : new()        {            List
         
           list = new List
          
           (); XmlDocument doc = new XmlDocument(); PropertyInfo[] propinfos = null; doc.LoadXml(xml); XmlNodeList nodelist = doc.GetElementsByTagName(headtag); foreach (XmlNode node in nodelist) { T entity = new T(); //初始化propertyinfo if (propinfos == null) { Type objtype = entity.GetType(); propinfos = objtype.GetProperties(); } //填充entity类的属性 foreach (PropertyInfo propinfo in propinfos) { XmlNode cnode = node.SelectSingleNode(propinfo.Name); if (cnode == null) continue; string v = cnode.InnerText; if (v != null) propinfo.SetValue(entity, Convert.ChangeType(v, propinfo.PropertyType), null); } list.Add(entity); } return list; } #endregion #region 使用XML初始化实体类容器 /// 
           
 /// 使用XML初始化实体类容器 /// 
 /// 
            /// 
           The typename. /// 
           The XML. /// 
           The headtag. /// 
            public static List
           
             XmlToObjListByAttr
            
             (string xml, string headtag) where T : new() { List
             
               list = new List
              
               (); XmlDocument doc = new XmlDocument(); PropertyInfo[] propinfos = null; doc.LoadXml(xml); XmlNodeList nodelist = doc.GetElementsByTagName(headtag); foreach (XmlNode node in nodelist) { T entity = new T(); //初始化propertyinfo if (propinfos == null) { Type objtype = entity.GetType(); propinfos = objtype.GetProperties(); } //填充entity类的属性 foreach (PropertyInfo propinfo in propinfos) { XmlNode cnode = node.Attributes[propinfo.Name.ToLower()]; if (cnode == null) continue; string v = cnode.InnerText; if (v != null) propinfo.SetValue(entity, Convert.ChangeType(v, propinfo.PropertyType), null); } list.Add(entity); } return list; } #endregion /// 
               
 /// 将对象转换为二进制流 /// 
 /// 
                /// 
                public static byte[] ConvertToXmlStream(this object item) { var serializer = new XmlSerializer(item.GetType()); using (MemoryStream ms = new MemoryStream()) { serializer.Serialize(ms, item); var bytes = ms.ToArray(); ms.Close(); return bytes; } } /// 
               
 /// 在Xml源中查找指定节点文本 /// 
 /// 
                /// 
                /// 
                public static List
               
                 GetNodeInnerText(string originXml, string nodeTag) { List
                
                  strList = new List
                 
                  (); XmlDocument doc = new XmlDocument(); doc.LoadXml(originXml); XmlNodeList nodes = doc.GetElementsByTagName(nodeTag); for (int i = 0; i < nodes.Count; i++) { XmlNode node = nodes[i]; strList.Add(node.InnerText); } return strList; } /// 
                  
 /// 使用XML初始化实体类容器 /// 
 /// 
                   /// 
                  The typename. /// 
                  The XML. /// 
                  The headtag. /// 
                   public static List
                  
                    XmlToObjList
                   
                    (string xml, string headtag) where T : new() { List
                    
                      list = new List
                     
                      (); XmlDocument doc = new XmlDocument(); PropertyInfo[] propinfos = null; doc.LoadXml(xml); XmlNodeList nodelist = doc.GetElementsByTagName(headtag); foreach (XmlNode nodef in nodelist) { XmlNodeList itemNodelist = nodef.ChildNodes; foreach (XmlNode node in itemNodelist) { T entity = new T(); //初始化propertyinfo if (propinfos == null) { Type objtype = entity.GetType(); propinfos = objtype.GetProperties(); } //填充entity类的属性 foreach (PropertyInfo propinfo in propinfos) { XmlNode cnode = node.SelectSingleNode(propinfo.Name); if (cnode == null) continue; string v = cnode.InnerText; if (v != null) propinfo.SetValue(entity, Convert.ChangeType(v, propinfo.PropertyType), null); } list.Add(entity); } } return list; } }