[Solved] Regex to remove specific params from tags [closed]

Question

HEIGHT: \d+[^;]+; will match HEIGHT: 218px; in <body style="HEIGHT: 218px; margin: 0px; background-color: #ffffff;" jQuery111105496473080628138="10">

Something like this could get you going:
(HEIGHT:\s*\d{1,}[^;]*;)(?<=<body.*style="[^"]*)(?=[^"].*"\s*>)

Which ~translates~ to :

Capture: (HEIGHT:\s*\d{1,}[^;]*;)

If preceded by: (?<=<body.*style="[^"]*)

And followed by: (?=[^"].*"\s*>)

Implemented in code:

using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
static void Main(string[] args)
{
    string string1 = "<body style=\"HEIGHT: 218px; margin: 0px; background-color: #ffffff;\" jQuery111105496473080628138=\"10\">";
    string string2 = "<body jQuery111105496473080628138=\"10\" style=\"HEIGHT: 218px; margin: 0px; background-color: #ffffff;\" >";
    string string3 = "<test style=\"HEIGHT: 218px; margin: 0px; background-color: #ffffff;\" jQuery111105496473080628138=\"10\">";
    List<string> theList = new List<string> { string1, string2, string3 };

    Regex heightMatchingRegex = new Regex("(HEIGHT:\\s*\\d{1,}[^;]*;)(?<=<body.*style=\"[^\"]*)(?=[^\"].*\"\\s*>)");

    foreach (string item in theList)
    {
        if (heightMatchingRegex.IsMatch(item))
        {
            Console.WriteLine("The match: " + heightMatchingRegex.Match(item));
            Console.WriteLine("Original: " + item);
            Console.WriteLine("Modified: " + heightMatchingRegex.Replace(item, ""));
        }
    }

    Console.ReadLine();
}

The fiddle to try it out:
https://dotnetfiddle.net/CIgByr

Accepted Answer