title: How do I return which delimiter split a certain string? (C#)
body: <p>I'm splitting a user input <code>string</code> at the <em>math operators</em>, I want to know if there's some way to remember exactly which <em>operator</em> acted as the <em>delimiter</em> within the code?</p>
  <pre><code>private void button1_Click(object sender, EventArgs e)
  {
      string userInput = textBox1.Text;
      char[] operators = { '+', '-', '*', '/' };
      //splits the entered string into substrings after encountering operator characters
      string[] operands = userInput.Split(operators);
  }
  </code></pre>