Csharp/C Sharp/XML LINQ/Event — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
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Версия 18:31, 26 мая 2010
XObject Event Handling
<source lang="csharp"> using System; using System.Linq; using System.Collections; using System.Collections.Generic; using System.Xml; using System.Xml.Linq; public class MainClass {
public static void Main() { XElement firstParticipant; XDocument xDocument = new XDocument( new XElement("Books", firstParticipant = new XElement("Book", new XAttribute("type", "Author"), new XElement("FirstName", "J"), new XElement("LastName", "R")), new XElement("Book", new XAttribute("type", "Author"), new XElement("FirstName", "E"), new XElement("LastName", "B")))); Console.WriteLine(xDocument); firstParticipant.Changing += new EventHandler<XObjectChangeEventArgs>(MyChangingEventHandler); firstParticipant.Changed += new EventHandler<XObjectChangeEventArgs>(MyChangedEventHandler); xDocument.Changed += new EventHandler<XObjectChangeEventArgs>(DocumentChangedHandler); } public static void MyChangingEventHandler(object sender, XObjectChangeEventArgs cea) { Console.WriteLine("Type of object changing: {0}, Type of change: {1}", sender.GetType().Name, cea.ObjectChange); }
public static void MyChangedEventHandler(object sender, XObjectChangeEventArgs cea) { Console.WriteLine("Type of object changed: {0}, Type of change: {1}", sender.GetType().Name, cea.ObjectChange); }
public static void DocumentChangedHandler(object sender, XObjectChangeEventArgs cea) { Console.WriteLine("Doc: Type of object changed: {0}, Type of change: {1}{2}", sender.GetType().Name, cea.ObjectChange, System.Environment.NewLine); }
}
</source>
XObject Event Handling Using Lambda Expressions
<source lang="csharp"> using System; using System.Linq; using System.Collections; using System.Collections.Generic; using System.Xml; using System.Xml.Linq; public class MainClass {
public static void Main() { XElement firstParticipant; XDocument xDocument = new XDocument( new XElement("Books", firstParticipant = new XElement("Book", new XAttribute("type", "Author"), new XElement("FirstName", "J"), new XElement("LastName", "R")), new XElement("Book", new XAttribute("type", "Author"), new XElement("FirstName", "E"), new XElement("LastName", "B")))); Console.WriteLine("{0}{1}", xDocument, System.Environment.NewLine); firstParticipant.Changing += new EventHandler<XObjectChangeEventArgs>( (object sender, XObjectChangeEventArgs cea) => Console.WriteLine("Type of object changing: {0}, Type of change: {1}", sender.GetType().Name, cea.ObjectChange)); firstParticipant.Changed += (object sender, XObjectChangeEventArgs cea) => Console.WriteLine("Type of object changed: {0}, Type of change: {1}", sender.GetType().Name, cea.ObjectChange); xDocument.Changed += (object sender, XObjectChangeEventArgs cea) => Console.WriteLine("Doc: Type of object changed: {0}, Type of change: {1}{2}", sender.GetType().Name, cea.ObjectChange, System.Environment.NewLine);
firstParticipant.Element("FirstName").Value = "Seph"; Console.WriteLine("{0}{1}", xDocument, System.Environment.NewLine); }
}
</source>