title: Using MessageBox C# - Throws Error
body: <p>I want to use MessageBox in C#</p>
  
  <pre><code>using System.Windows.Forms;
  
  MessageBox.Show("Some text", "Some title",MessageBoxButtons.OK, MessageBoxIcon.Error);
  </code></pre>
  
  <p>Still I got this error. How to fix it?</p>
  
  <pre><code>The MessageBox does not exist in current context.
  </code></pre>