Linq使用(3)

         1.     XDocument doc = XDocument.Parse(returnValue.Trim());
              var cdistinct = doc.Descendants("reportname").Where(p => Convert.ToString(p.Element(x).Value).Trim() != "").Select(p => Convert.ToString(p.Element(x).Value)).Distinct();
              string[] dataDistinct=new string[cdistinct.Count()];
               int i=0;
               foreach (var count1 in cdistinct)
              {
                  dataDistinct.SetValue(count1, i);
                  i++;
              }
               return dataDistinct;

 

            2.  XElement xml = XElement.Load(文件地址名称);  //定义查询方法                                    

             var query = from c in  xml.DescendantsAndSelf("Customers")

              select new CustomerInfo                    

            {                        

               CustomerID = c.Elements("CustomerID").SingleOrDefault().Value,              

               CompanyName = c.Elements("CompanyName").SingleOrDefault().Value,        

                  ContactName = c.Elements("ContactName").SingleOrDefault().Value,          

                ContactTitle = c.Elements("ContactTitle").SingleOrDefault().Value,                

               Address = c.Elements("Address").SingleOrDefault().Value,            

               City = c.Elements("City").SingleOrDefault().Value,    

                      PostalCode = c.Elements("PostalCode").SingleOrDefault().Value,            

              Country = c.Elements("Country").SingleOrDefault().Value,                

              Phone = c.Elements("Phone").SingleOrDefault().Value,      

                    Fax = c.Elements("Fax").SingleOrDefault().Value,          

                Region = c.Elements("Region").SingleOrDefault().Value != "" ? true : false

              };