Uri.HexUnescape(String, Int32) Method

Definition

Namespace:

System

Assembly:

System.Runtime.dll

Source:

Uri.cs

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

public:
 static char HexUnescape(System::String ^ pattern, int % index);

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

static member HexUnescape : string * int -> char

Public Shared Function HexUnescape (pattern As String, ByRef index As Integer) As Char

Parameters

pattern

String

The hexadecimal representation of a character.

index

Int32

The location in pattern where the hexadecimal representation of a character begins.

Returns

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.

Exceptions

ArgumentOutOfRangeException

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

Remarks

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, index ) );
}
else
{
   Console::WriteLine( "The character is not hex encoded" );
}

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");

let testString = "%75"
let mutable index = 0
if Uri.IsHexEncoding(testString, index) then
    printfn $"The character is {Uri.HexUnescape(testString, &index)}"
else
    printfn "The character is not hexadecimal encoded"

Dim testString As String = "%75"
Dim index As Integer = 0
If Uri.IsHexEncoding(testString, index) Then
    Console.WriteLine("The character is {0}", Uri.HexUnescape(testString, index))
Else
    Console.WriteLine("The character is not hexadecimal encoded")
End If