>Hi how can i use System.Web.HttpUtility class in a WinForm. I just want to use the HttpUtility.URLEncode() of the that i Can integrate it to System.UriBuilder class. My first Problem actually it to Build a URL for the consumption of HttpWebRequest class then i notice that the String I pass is not URLEncode. Any Solution in creating and URLEncoded String?

You cna just add the System.Web namespace and use the class.

Because of the way that .NET dynamically loads assemblies and compiles code this is not as inefficient as it sounds <g>...

In .NET 2.0 some of the HttpUtility functions have been moved into the System.Net namespace.

If you'd rather not include System.Web you can use this function:

/// <summary>
/// UrlEncodes a string without the requirement for System.Web
/// </summary>
/// <param name="String"></param>
/// <returns></returns>
public static string UrlEncode(string InputString) 
{
	StringReader sr = new StringReader( InputString);
	StringBuilder sb = new StringBuilder(  InputString.Length );

	while (true) 
	{
		int Value = sr.Read();
		if (Value == -1)
			break;
		char CharValue = (char) Value;

		if (CharValue >= 'a' && CharValue < 'z' || 
			CharValue >= 'A' && CharValue < 'Z' || 
			CharValue >= '0' && CharValue < '9')
			sb.Append(CharValue);
		else if (CharValue == ' ') 
			sb.Append("+");
		else
			sb.AppendFormat("%{0:X2}",Value);
	}

	return sb.ToString();
}

+++ Rick ---