WebUtility Class
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WebUtility Class

.NET Framework 4.6 and 4.5

Provides methods for encoding and decoding URLs when processing Web requests.

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


public static class WebUtility


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

System_CAPS_pubmethodSystem_CAPS_staticHtmlDecode(String, TextWriter)

Converts a string that has been HTML-encoded into a decoded string, and sends the decoded string to a TextWriter output stream.


Converts a string to an HTML-encoded string.

System_CAPS_pubmethodSystem_CAPS_staticHtmlEncode(String, TextWriter)

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


Converts a string that has been encoded for transmission in a URL into a decoded string.

System_CAPS_pubmethodSystem_CAPS_staticUrlDecodeToBytes(Byte[], Int32, Int32)

Converts an encoded byte array that has been encoded for transmission in a URL into a decoded byte array.


Converts a text string into a URL-encoded string.

System_CAPS_pubmethodSystem_CAPS_staticUrlEncodeToBytes(Byte[], Int32, Int32)

Converts a byte array into a URL-encoded byte array.

The HttpUtility class contains encoding and decoding utility methods for use with HTML-encode strings. The System.Uri class also contains methods and properties that can be used for similar purposes.

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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