C#——LINQ to XML(内容快速查找)

        static void Main(string[] args){XElement purchaseOrder = XElement.Load("Contacts.xml");string partNos = (string)(from item in purchaseOrder.Descendants("City")select item).First();Console.WriteLine(partNos);}

输出结果：Mercer Island

其中Contacts.xml文件如下：

<?xml version="1.0"?><Contacts><Contact><Name>Patrick Hines</Name><Phone Type="Home">206-555-0144</Phone><phone Type="Work">425-555-0145</phone><Address><Street1>123 Main St</Street1><City>Mercer Island</City><State>WA</State><Postal>68042</Postal></Address></Contact></Contacts>