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Uri.HexUnescape Method

Converts a specified hexadecimal representation of a character to the character.

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

public static char HexUnescape(
	string pattern,
	ref int index
)

Parameters

pattern
Type: System.String
The hexadecimal representation of a character.
index
Type: System.Int32%
The location in pattern where the hexadecimal representation of a character begins.

Return Value

Type: System.Char
The character represented by the hexadecimal encoding at position index. If the character at index is not hexadecimal encoded, the character at index is returned. The value of index is incremented to point to the character following the one returned.

ExceptionCondition
ArgumentOutOfRangeException

index is less than 0 or greater than or equal to the number of characters in pattern.

The following code example determines whether a character is hexadecimal encoded and, if so, writes the equivalent character to the console.


string testString = "%75";
int index = 0;
if (Uri.IsHexEncoding(testString, index))
     Console.WriteLine("The character is {0}", Uri.HexUnescape(testString, ref index));
else
     Console.WriteLine("The character is not hexadecimal encoded");


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, 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.
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