C# Uri IsHexEncoding

Description

Uri IsHexEncoding determines whether a character in a string is hexadecimal encoded.

Syntax

Uri.IsHexEncoding has the following syntax.

public static bool IsHexEncoding(
  string pattern,
  int index
)

Parameters

Uri.IsHexEncoding has the following parameters.

• pattern - The string to check.
• index - The location in pattern to check for hexadecimal encoding.

Returns

Uri.IsHexEncoding method returns A Boolean value that is true if pattern is hexadecimal encoded at the specified location; otherwise, false.

Example

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

//  w  w w  . j  a  va  2 s.c  o  m
using System;
public class MainClass{
  public static void Main(String[] argv){  
    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");

  }
}
    

The code above generates the following result.