WebUtility.HtmlEncode Method (String, TextWriter)

.NET Framework (current version)

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Converts a string into an HTML-encoded string, and returns the output as a TextWriter stream of output.

Namespace:   System.Net
Assembly:  System (in System.dll)

public static void HtmlEncode(
	string value,
	TextWriter output


Type: System.String

The string to encode.

Type: System.IO.TextWriter

A TextWriter output stream.

Exception Condition

The output parameter cannot be null if the value parameter is not null.

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.

.NET Framework
Available since 4.0
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