title: How I Do Sum One Textbox Amount to another Text Box VB.NET
body: <p>I have two text boxes <code>TextBox1</code> and <code>TextBox2</code>. I want to add the <code>TextBox2</code> amount in <code>TextBox1</code>. I have use the below but the answer is not correct.</p>
  
  <pre><code>Private Sub TextBox2_TextChanged(sender As System.Object, e As System.EventArgs) Handles TextBox2.TextChanged
      TextBox1.Text = Val(TextBox2.Text) + Val(TextBox1.Text)
      TextBox2.Text = (FormatNumber(TextBox2.Text))
  End Sub
  </code></pre>