C# Textbox checking
<p>Am trying to test if the content of my <code>textBox</code> is equal to zero, I have two <code>textBox</code> with the same values. I want to ensure that the user cannot continue  except one of my <code>textBox</code> is equal to zero. tried some means but not working. i tried this:</p>

<pre><code>double amount;
amount = double.Parse(transactDisplay.Text.ToString());
if (amount &gt; 0)
{
    MessageBox.Show("Please pay before proceding", "Money not paid",
                                    MessageBoxButtons.OK, MessageBoxIcon.Stop);

}
</code></pre>

<p>but its not working.</p>
