Create XmlReader from Stream
using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.Xml;
using System.IO;
class MainClass
{
static void Main(string[] args)
{
WebClient client = new WebClient();
Stream rssFeedStream = client.OpenRead("http://yourRssFeedURL");
XmlReader reader = XmlReader.Create(rssFeedStream);
reader.MoveToContent();
while (reader.ReadToFollowing("item"))
{
ProcessItem(reader.ReadSubtree());
}
}
static void ProcessItem(XmlReader reader)
{
reader.ReadToFollowing("title");
string title = reader.ReadElementContentAsString("title", reader.NamespaceURI);
reader.ReadToFollowing("link");
string link = reader.ReadElementContentAsString("link", reader.NamespaceURI);
Console.WriteLine("{0}\n\t{1}", title, link);
}
}
Read Xml output from database
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
using System.Xml;
using System.IO;
using System.Diagnostics;
public class MainClass
{
public static void Main()
{
SqlConnection cnn = new SqlConnection(@"data source=.\sqlexpress;initial catalog=northwind;integrated security=true");
SqlCommand cmd = new SqlCommand();
cmd.Connection = cnn;
cmd.rumandType = CommandType.Text;
cmd.rumandText = "select * from Employee FOR XML AUTO";
cnn.Open();
XmlReader reader=cmd.ExecuteXmlReader();
StreamWriter writer= File.CreateText(Application.StartupPath + @"\temp.xml");
writer.Write("");
while (reader.Read())
{
writer.Write(reader.ReadOuterXml());
}
writer.Write("");
writer.Close();
reader.Close();
cnn.Close();
Process.Start(Application.StartupPath + @"\temp.xml");
}
}
Using XmlReader to read Xml result set from database
using System;
using System.Data;
using System.Data.SqlClient;
using System.Xml;
public class DirectXML
{
private static string connectionString = "Data Source=localhost;Initial Catalog=Northwind;Integrated Security=SSPI";
public static void Main()
{
string SQL = "SELECT CategoryID, CategoryName, Description FROM Categories FOR XML AUTO";
SqlConnection con = new SqlConnection(connectionString);
SqlCommand com = new SqlCommand(SQL, con);
try
{
con.Open();
XmlReader reader = com.ExecuteXmlReader();
while (reader.Read())
{
Console.WriteLine(reader.Name);
if (reader.HasAttributes)
{
for (int i = 0; i < reader.AttributeCount; i++)
{
reader.MoveToAttribute(i);
Console.Write(reader.Name + ": " + reader.Value);
}
reader.MoveToElement();
}
}
reader.Close();
}
catch (Exception err)
{
Console.WriteLine(err.ToString());
}
finally
{
con.Close();
}
}
}
XmlReader: ReadElementContentAsString
using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.Xml;
using System.IO;
class MainClass
{
static void Main(string[] args)
{
WebClient client = new WebClient();
Stream rssFeedStream = client.OpenRead("http://yourRssFeedURL");
XmlReader reader = XmlReader.Create(rssFeedStream);
reader.MoveToContent();
while (reader.ReadToFollowing("item"))
{
ProcessItem(reader.ReadSubtree());
}
}
static void ProcessItem(XmlReader reader)
{
reader.ReadToFollowing("title");
string title = reader.ReadElementContentAsString("title", reader.NamespaceURI);
reader.ReadToFollowing("link");
string link = reader.ReadElementContentAsString("link", reader.NamespaceURI);
Console.WriteLine("{0}\n\t{1}", title, link);
}
}
XmlReaderSettings and XmlWriterSettings
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Xml;
public class MainClass
{
public static void Main()
{
XmlReader reader;
XmlWriter writer;
XmlReaderSettings readerSettings =new XmlReaderSettings();
XmlWriterSettings writerSettings = new XmlWriterSettings();
readerSettings.IgnoreComments = true;
readerSettings.Schemas.Add(null, "pubs.xsd");
readerSettings.ValidationType = ValidationType.None;
writerSettings.OmitXmlDeclaration = true;
writerSettings.Indent = true;
writerSettings.NewLineOnAttributes = true;
reader = XmlReader.Create("pubs.xml", readerSettings);
writer = XmlWriter.Create("output.xml", writerSettings);
while (reader.Read())
{
writer.WriteNode(reader, true);
}
reader.Close();
writer.Close();
}
}
XmlTextReader in Action
using System;
using System.Xml;
class XmlTextReaderSample {
[STAThread]
static void Main(string[] args) {
XmlTextReader xmlTextReader = new XmlTextReader("sample.xml");
while (xmlTextReader.Read()) {
if (xmlTextReader.NodeType == XmlNodeType.Element) {
Console.Out.WriteLine((new String(" ", xmlTextReader.Depth * 3)) + "Name: <" + xmlTextReader.Name + ">; Depth: " + xmlTextReader.Depth.ToString() + "; Attributes count: " + xmlTextReader.AttributeCount.ToString() + ";");
}
}
}
}
