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C# HTML and XML Handling
Use HTML in the C# language. See HtmlTextWriter and XElement examples.Markup languages. HTML and XML are text-based markup languages that are commonly used to store data. They are easy to parse and share with other systems.
HTML is everywhere. For this reason, be in gable to process it is important. The .NET Framework has the tools necessary for basic and advanced manipulation and creation of HTML.
HtmlTextWriter. There are many ways to handle HTML. In this introductory program, we use the HtmlTextWriter type, which is an abstract data type for generating HTML markup.HtmlTextWriter
Next: In this example we see that a span tag is opened and closed by the HtmlTextWriter.
C# program that writes HTML
using System;
using System.IO;
using System.Web.UI;
class Program
{
static void Main()
{
using (StringWriter stringWriter = new StringWriter())
using (HtmlTextWriter htmlWriter = new HtmlTextWriter(stringWriter))
{
htmlWriter.RenderBeginTag(HtmlTextWriterTag.Span);
htmlWriter.Write("Perls");
htmlWriter.RenderEndTag();
Console.WriteLine(stringWriter);
}
}
}
Output
<span>Perls</span>
XElement. This program uses the System.Xml.Linq namespace to load XML files into XElement objects. There are other ways to handle XML but XElement is one of the easiest.XElement
Tip: The .NET Framework provides rich support for XML, including classes in System.Xml and System.Xml.Linq.
Example XML file:
<?xml version="1.0"?>
<tag>Test</tag>
C# program that loads example XML file
using System;
using System.Xml.Linq;
class Program
{
static void Main()
{
// Load the XML.
XElement element = XElement.Load("C:\\text.xml");
// Write text value.
Console.WriteLine(element.Value);
}
}
Output
Test
Manipulate HTML. We show how to manipulate, generate, or remove HTML markup. You can also encode entities in HTML. A simple way to handle HTML uses regular expressions.HtmlEncode, HtmlDecodeHttpUtilityParagraph HTML RegexRemove HTML TagsScraping HTML LinksTitle From HTML
HTML colors. Many different named colors are available in the hypertext markup language. These can also be specified directly inside CSS files. We print all the HTML colors.Color Table
XML types. To continue, we show how to write XML and also read in XML. XmlWriter and XmlReader are fast. You could use the types in parallel to implement persistence.XmlWriterXmlReader
XmlTextWriter: You can also find information about XmlTextWriter and XmlTextReader on this site.
XmlTextWriterXmlTextReaderQuote: Extensible Markup Language, abbreviated XML, describes a class of data objects called XML documents.. (The World Wide Web Consortium).
In the real world, parsing HTML is fairly difficult because we must support badly formed markup. On the other hand, XML is easy to parse because it has strict rules for correctness.
Storing data. If you need to store data, using XML is often better than HTML. It is easier to handle in code. For optimal performance, binary data is a better option.
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- C# Short and ushort Types
- C# Single Method: Get Element If Only One Matches
- C# SingleOrDefault
- C# Singleton Pattern Versus Static Class
- C# Singleton Class
- C# sizeof Keyword
- C# Skip and SkipWhile Examples
- C# Sleep Method (Pause)
- C# Sort Dictionary: Keys and Values
- C# Sort by File Size
- C# Sort, Ignore Leading Chars
- C# Sort KeyValuePair List: CompareTo
- C# Sort Strings by Length
- C# Thread.SpinWait Example
- C# Math.Sqrt Method
- C# stackalloc Operator
- C# StackOverflowException
- C# StartsWith and EndsWith String Methods
- C# Static Array
- C# Static Dictionary
- C# Stopwatch Examples
- C# Stream
- C# StreamReader ReadToEnd Example (Read Entire File)
- C# StreamReader ReadToEndAsync Example (Performance)
- C# StreamReader Examples
- C# StreamWriter Examples
- C# String Append (Add Strings)
- C# String Compare and CompareTo Methods
- C# String Constructor (new string)
- C# string.Copy Method
- C# CopyTo String Method: Put Chars in Array
- C# Empty String Examples
- C# String Equals Examples
- C# String For Loop, Count Spaces in String
- C# string.Intern and IsInterned
- C# String IsUpper, IsLower
- C# String Length Property: Get Character Count
- C# String Literal: Newline and Quote Examples
- C# StringBuilder Capacity
- C# StringBuilder Clear (Set Length to Zero)
- C# StringBuilder Data Types
- C# StringBuilder Performance
- C# StringBuilder Equals (If Chars Are Equal)
- C# StringBuilder Memory
- C# StringBuilder ToString: Get String From StringBuilder
- C# StringWriter Class
- C# Sum Method: Add up All Numbers
- C# Switch Char, Test Chars With Cases
- C# Switch Enum
- C# System (using System namespace)
- C# Tag Property: Windows Forms
- C# TextInfo Examples
- C# TextReader, Returned by File.OpenText
- C# TextWriter, Returned by File.CreateText
- C# this Keyword
- C# ThreadPool
- C# Thread Join Method (Join Array of Threads)
- C# ThreadPool.SetMinThreads Method
- C# TimeZone Examples
- C# Get Title From HTML With Regex
- C# ToArray Extension Method
- C# ToCharArray: Convert String to Array
- C# ToDictionary Method
- C# Token
- C# ToList Extension Method
- C# ToLookup Method (Get ILookup)
- C# ToLower and ToUpper: Uppercase and Lowercase Strings
- ToolStripContainer Control: Dock, Properties
- C# ToolTip: Windows Forms
- C# ToString Integer Optimization
- C# ToString: Get String From Object
- C# ToTitleCase Method
- C# TrackBar: Windows Forms
- C# Tree and Nodes Example: Directed Acyclic Word Graph
- C# TreeView Tutorial
- C# Trim Strings
- C# Thread Methods
- C# History
- C# Features
- C# Variables
- C# Data Types
- C# Operators
- C# Keywords
- C# New Features | C# Version Features
- C# Programs
- C# Program to swap numbers without third variable
- C# Program to convert Decimal to Binary
- C# Program to Convert Number in Characters
- C# Program to Print Alphabet Triangle
- C# Program to print Number Triangle
- C# Program to generate Fibonacci Triangle
- C# String Compare() method
- C# String CompareOrdinal() method
- C# String CompareTo() method
- C# String Concat() method
- C# String Contains() method
- C# String CopyTo() method
- C# String EndsWith() method
- C# String Equals() method
- C# String Format() method
- C# String IndexOf() method
- C# String Insert() method
- C# String Intern(String str) method
- C# String IsInterned() method
- C# String Normalize() method
- C# String IsNullOrEmpty() method
- C# String IsNullOrWhiteSpace() method
- C# String Join() method
- C# String LastIndexOf() method
- C# String LastIndexOfAny() method
- C# String PadLeft() method
- C# String PadRight() method
- C# Nullable
- C# String Remove() method
- C# String Replace() method
- C# String Split() method
- C# String StartsWith() method
- C# String SubString() method
- C# Partial Types
- C# Iterators
- C# Delegate Covariance
- C# Delegate Inference
- C# Anonymous Types
- C# Extension Methods
- C# Query Expression
- C# Partial Method
- C# Implicitly Typed Local Variable
- C# Object and Collection Initializer
- C# Auto Implemented Properties
- C# Dynamic Binding
- C# Named and Optional Arguments
- C# Asynchronous Methods
- C# Caller Info Attributes
- C# Using Static Directive
- C# Exception Filters
- C# Await in Catch Finally Blocks
- C# Default Values for Getter Only Properties
- C# Expression Bodied Members
- C# Null Propagator
- C# String Interpolation
- C# nameof operator
- C# Dictionary Initializer
- C# Pattern Matching
- C# Tuples
- C# Deconstruction
- C# Local Functions
- C# Binary Literals
- C# Ref Returns and Locals
- C# Expression Bodied Constructors and Finalizers
- C# Expression Bodied Getters and Setters
- C# Async Main
- C# Default Expression