using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(<span style=""font-size:22px"" class=""txt-color-(red|black)"">(.+?)<\/span>)";
string input = @"<span style=""font-size:22px"" class=""txt-color-black"">dummy-data</span>
<span style=""font-size:22px"" class=""txt-color-red"">dummy-data</span>";
RegexOptions options = RegexOptions.Multiline;
foreach (Match m in Regex.Matches(input, pattern, options))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
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