title: Error "Unable to evaluate the expression"
body: <p>I have a problem with a debugging tools named as memory.I am opening this tool <em>Debug tool → Windows → Memory → Memory 1</em>.</p>
  
  <p>This is my whole code:</p>
  
  <pre><code>using System;
  using System.Windows.Forms;
  
  namespace CSharpCompleteTutorial
  {
  public partial class Form1 : Form
  {
      public Form1()
      {
          InitializeComponent();
      }
  
      public delegate decimal Hesaplama(int adet);
      private void Form1_Load(object sender, EventArgs e)
      {
          Hesaplama del = Fiyat;
          del += KDVFiyat;
          MessageBox.Show(del.Invoke(5).ToString());
      }
  
      public decimal Fiyat(int sayi)
      {
          return sayi * 10.5m;
      }
  
      public decimal KDVFiyat(int sayi)
      {
          decimal kdvharicfiyat = sayi * 10.5m;
  
          return kdvharicfiyat + kdvharicfiyat * 0.18m;
      }
  }
  }
  </code></pre>
  
  <p>I have to use simply memory tool.But it makes me an error as in the image.</p>
  
  <p><img src="https://i.stack.imgur.com/odM0k.png" alt="Image of error"></p>