Html clean - remove image style, C#

Html clean - remove image style

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            string input= "<img alt=\"\" src=\"http://admin.joytravelonline.ro/Files/EditorFiles/Images/exotic/Snap%202017-03-04%20at%2000.31.24.png\" height=\" 219px\" width=\" 320px\" style=\"text-align: left; font-family: 'Times New Roman', serif; width: 508px; height: 300px;\"  color:black; />";
              string input2= "<img alt=\"\" src=\"http://admin.joytravelonline.ro/Files/EditorFiles/Images/exotic/Snap%202017-03-04%20at%2000.31.24.png\" style=\"text-align: left; font-family: 'Times New Roman', serif; width: 508px; height: 300px;\"  color:black; />";
            string s = CleanHtml(input2);
            Console.Write(s);
        }

public static string CleanHtml(string matchText)
    {
         string imageWidth="";   
         string imageHeight="";
         string beforeStyle="";
         string afterStyle="";
         string imageStyleHeight="";
         string imageStyleWidth="";
         string ghilimele="";
         string replaceText="";
         bool hasStyleHeight=false;
         bool hasStyleWidth=false;
         
         string beforeHeight="";
         string afterHeight="";
         string beforeWidth="";
         string afterWidtht="";
         if (matchText.ToLower().Contains("style"))
          {
            imageStyleHeight = Regex.Match(matchText, "<img.+?style=(.+?)height:(.+?);", RegexOptions.IgnoreCase).Groups[2].Value;
             if(!(String.IsNullOrEmpty(imageStyleHeight)))
             {
                 hasStyleHeight=true;
             }         
            imageStyleWidth = Regex.Match(matchText, "<img.+?style=(.+?)width:(.+?);", RegexOptions.IgnoreCase).Groups[2].Value;
             if(!(String.IsNullOrEmpty(imageStyleWidth)))
             {
                 hasStyleWidth=true;
             }
             if(hasStyleWidth ||  hasStyleHeight)
             {
                 beforeStyle = Regex.Match(matchText, "<img(.+?)style", RegexOptions.IgnoreCase).Groups[1].Value;
                 afterStyle = Regex.Match(matchText, "<img(.+?)style=\"(.+?)\"(.+?)/>", RegexOptions.IgnoreCase).Groups[3].Value;
                 ghilimele = Regex.Match(matchText, "<img.+?style=(.+?)width:(.+?);", RegexOptions.IgnoreCase).Groups[1].Value;
                 imageWidth = Regex.Match(matchText, "<img.+?width=(.+?)(.+?)(.+?)px", RegexOptions.IgnoreCase).Groups[3].Value;
                imageHeight = Regex.Match(matchText, "<img.+?height=(.+?)(.+?)(.+?)px", RegexOptions.IgnoreCase).Groups[3].Value;  
                if((!(String.IsNullOrEmpty(imageWidth)))||(!(String.IsNullOrEmpty(imageHeight))))
                 {
                    if (!(String.IsNullOrEmpty(imageWidth)))
                      {
                            //imageWidth = Regex.Match(matchText, "<img.+?width=(.+?)(.+?)(.+?)px", RegexOptions.IgnoreCase).Groups[3].Value;
                            matchText=matchText.Replace(imageWidth+"px",imageStyleWidth);
                      }
                    if (!(String.IsNullOrEmpty(imageHeight)))
                     {
                            //imageHeight = Regex.Match(matchText, "<img.+?height=(.+?)(.+?)(.+?)px", RegexOptions.IgnoreCase).Groups[3].Value;                         
                            matchText=matchText.Replace(imageHeight+"px",imageStyleHeight);
                     }
                     replaceText ="<img " + beforeStyle + afterStyle + "/>";
                 }
            
                 else
                 { 
                    replaceText = "<img " + beforeStyle + "height=" + "\"" + imageStyleHeight + "\"" + " width=" + "\"" + imageStyleWidth +  "\"" + afterStyle + "/>";
                 }
                   // html = Regex.Replace(html, matchText, replaceText);  
             }
         }
          matchText = Regex.Replace(matchText, matchText, replaceText);
         return matchText;
        }
    }
}


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