using System;
using System.ComponentModel;
using System.Diagnostics;
using System.IO;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
using System.Web;
using System.Xml;
using System.Xml.Serialization;
using System.Collections.Generic;
using System.Drawing;
public static class Utility
{
const string UnreservedChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_.~";
///
/// This is a different Url Encode implementation since the default .NET one outputs the percent encoding in lower case.
/// While this is not a problem with the percent encoding spec, it is used in upper case throughout OAuth
///
/// The value to Url encode
/// Returns a Url encoded string
public static string UrlEncode(string value)
{
var result = new StringBuilder();
foreach (char symbol in value)
{
if (UnreservedChars.IndexOf(symbol) != -1)
{
result.Append(symbol);
}
else
{
//some symbols produce > 2 char values so the system urlencoder must be used to get the correct data
if (String.Format("{0:X2}", (int)symbol).Length > 3)
{
// ReSharper disable PossibleNullReferenceException
result.Append(HttpUtility.UrlEncode(value.Substring(value.IndexOf(symbol), 1)).ToUpper());
// ReSharper restore PossibleNullReferenceException
}
else
{
result.Append('%' + String.Format("{0:X2}", (int)symbol));
}
}
}
return result.ToString();
}
}