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HttpUtility.UrlDecode Method (Byte[], Int32, Int32, Encoding)

Converts a URL-encoded byte array into a decoded string using the specified encoding object, starting at the specified position in the array, and continuing for the specified number of bytes.

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

public static string UrlDecode (
	byte[] bytes,
	int offset,
	int count,
	Encoding e
)
public static String UrlDecode (
	byte[] bytes, 
	int offset, 
	int count, 
	Encoding e
)
public static function UrlDecode (
	bytes : byte[], 
	offset : int, 
	count : int, 
	e : Encoding
) : String
Not applicable.

Parameters

bytes

The array of bytes to decode.

offset

The position in the byte to begin decoding.

count

The number of bytes to decode.

e

The Encoding object that specifies the decoding scheme.

Return Value

A decoded string.

Exception typeCondition

ArgumentNullException

bytes is a null reference (Nothing in Visual Basic), but count does not equal 0.

ArgumentOutOfRangeException

offset is less than 0 or greater than the length of the bytes array.

- or -

count is less than 0, or count + offset is greater than the length of the bytes array.

If characters such as blanks and punctuation are passed in an HTTP stream, they might be misinterpreted at the receiving end. URL encoding converts characters that are not allowed in a URL into character-entity equivalents; URL decoding reverses the encoding. For example, when embedded in a block of text to be transmitted in a URL the characters < and > are encoded as %3c and %3e.

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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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