using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"<img src="".*?\/([A-Z0-9]+)\.\w+""\s*\/><img src="".*?\/([A-Z0-9]+)\.\w+""\s*\/>";
string substitution = @"&#x$1; &#x$2;";
string input = @"<img src=""http://www.example.com/app_res/emoji/1F60A.png"" /><img src=""http://www.example.com/app_res/emoji/1F389.png"" />
<img src=""http://www.example.com/app_res/emoji/1F61E.png"" /><img src=""http://www.example.com/app_res/emoji/1F339.png"" />";
RegexOptions options = RegexOptions.Multiline;
Regex regex = new Regex(pattern, options);
string result = regex.Replace(input, substitution);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx