Tách các thẻ img bằng RegularExpressions

//  using System.Text.RegularExpressions;

/// <summary>
///  Regular expression built for C# on: Mon, Nov 22, 2010, 03:51:18 PM
///  Using Expresso Version: 3.0.2766, http://www.ultrapico.com
///  
///  A description of the regular expression:
///  
///  <img src="
///      <img
///      Space
///      src="
///  Any character that is NOT in this class: ["], any number of repetitions
///  " alt="
///      "
///      Space
///      alt="
///  [1]: A numbered capture group. [[^"]*]
///      Any character that is NOT in this class: ["], any number of repetitions
///  ">
///      ">
///  
///
/// </summary>
public static Regex regex = new Regex(
      "<img src=\"[^\"]*\" alt=\"([^\"]*)\">",
      RegexOptions.Compiled
    );


// This is the replacement string
public static string regexReplace = "$1";


//// Replace the matched text in the InputText using the replacement pattern
// string result = regex.Replace(InputText,regexReplace);

//// Split the InputText wherever the regex matches
// string[] results = regex.Split(InputText);

//// Capture the first Match, if any, in the InputText
// Match m = regex.Match(InputText);

//// Capture all Matches in the InputText
// MatchCollection ms = regex.Matches(InputText);

//// Test to see if there is a match in the InputText
// bool IsMatch = regex.IsMatch(InputText);

//// Get the names of all the named and numbered capture groups
// string[] GroupNames = regex.GetGroupNames();

//// Get the numbers of all the named and numbered capture groups
// int[] GroupNumbers = regex.GetGroupNumbers();