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HttpEncoder.HtmlEncode Method

Encodes a string into an HTML-encoded string.

Namespace:  System.Web.Util
Assembly:  System.Web (in System.Web.dll)

protected internal virtual void HtmlEncode(
	string value,
	TextWriter output


Type: System.String
The string to encode.
Type: System.IO.TextWriter
The text writer to write the encoded value to.


output is null.

The following table lists the character sequences that the ASP.NET encoding logic can decode.


Encoded as

< (left angle bracket)


> (right angle bracket)


" (double quotation marks)


& (ampersand)


\ (backslash)


ASCII characters from 160 to 255

&#NNN;, where NNN is the three-digit decimal character code

.NET Framework

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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