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HttpUtility.HtmlDecode Method (String)

Converts a string that has been HTML-encoded for HTTP transmission into a decoded string.

Namespace: System.Web
Assembly: System.Web (in system.web.dll)

'Declaration
Public Shared Function HtmlDecode ( _
	s As String _
) As String
'Usage
Dim s As String
Dim returnValue As String

returnValue = HttpUtility.HtmlDecode(s)
public static String HtmlDecode (
	String s
)
public static function HtmlDecode (
	s : String
) : String

Parameters

s

The string to decode.

Return Value

A decoded string.

If characters such as blanks and punctuation are passed in an HTTP stream, they might be misinterpreted at the receiving end. HTML encoding converts characters that are not allowed in HTML into character-entity equivalents; HTML decoding reverses the encoding. For example, when embedded in a block of text, the characters < and > are encoded as &lt; and &gt; for HTTP transmission.

The following code example demonstrates the HtmlEncode and HtmlDecode methods of the HttpUtility class. The input string is encoded using the HtmlEncode method. The encoded string obtained is then decoded using the HtmlDecode method.

Imports System
Imports System.Web
Imports System.IO

Class MyNewClass
   Public Shared Sub Main()
      Dim myString As String
      Console.WriteLine("Enter a string having '&' or '""'  in it: ")
      myString = Console.ReadLine()
      Dim myEncodedString As String
      ' Encode the string.
      myEncodedString = HttpUtility.HtmlEncode(myString)
      Console.WriteLine("HTML Encoded string is " + myEncodedString)
      Dim myWriter As New StringWriter()
      ' Decode the encoded string.
      HttpUtility.HtmlDecode(myEncodedString, myWriter)
      Console.Write("Decoded string of the above encoded string is " + myWriter.ToString())
   End Sub 'Main
End Class 'MyNewClass

import System.*;
import System.Web.*;
import System.IO.*;

class MyNewClass
{
    public static void main(String[] args)
    {
        String myString;
        Console.WriteLine("Enter a string having '&' or '\"'  in it: ");
        myString = Console.ReadLine();
        String myEncodedString;
        // Encode the string.
        myEncodedString = HttpUtility.HtmlEncode(myString);
        Console.WriteLine("HTML Encoded string is " + myEncodedString);
        StringWriter myWriter =  new StringWriter();
        // Decode the encoded string.
        HttpUtility.HtmlDecode(myEncodedString, myWriter);
        Console.Write("Decoded string of the above encoded string is " 
            + myWriter.ToString());
    } //main
} //MyNewClass

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

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