This document discusses XML in C# including writing XML to a file using an XmlWriter, reading XML from a file using an XmlReader, and sending data over a network using TCPListener and TCPClient classes. It provides code samples for creating an XML file with employee data and reading and parsing that XML file to output information to the console. Links are also included for Microsoft documentation on the networking classes.

1. Платформата Microsoft .NET и
езикът на програмиране C#

2. XML в C#

3. XML писане
using (XmlWriter writer = XmlWriter.Create("employees.xml")) {
writer.WriteStartDocument();
writer.WriteStartElement("Employees");
writer.WriteStartElement("Employee");
writer.WriteElementString("Name", “Ivan");
writer.WriteElementString("Salary", “1234");
writer.WriteEndElement();
writer.WriteEndElement();
writer.WriteEndDocument();
}

4. XML четене
using (XmlReader reader = XmlReader.Create("perls.xml")){
while (reader.Read()){
if (reader.IsStartElement()){
switch (reader.Name) {
case "Employees":
Console.WriteLine("Start <Employees> element.");
break;
case "Employee":
Console.WriteLine("Start <Employee> element.");
if (reader.Read())
{
Console.WriteLine(" Text node: " + reader.Value);
}
break;
}}}}

5. Пращане на данни по мрежата
 https://msdn.microsoft.com/en-
us/library/system.net.sockets.tcplistener(v=vs.110).aspx
 https://msdn.microsoft.com/en-
us/library/system.net.sockets.tcpclient(v=vs.110).aspx