Dropdownlist check if index changed by code or by selection
<p>I have a <code>DropDownList</code> in a project. This <code>DropDownList</code> contains a <code>SelectedIndexChanged</code> event:</p>

<pre><code>private void cbo_SelectedIndexChanged(object sender, EventArgs e){......}
</code></pre>

<p>Is it possible to check if the index was changed in the code, like:</p>

<pre><code>cbo.SelectedIndex = placering;
</code></pre>

<p>, or if the change happened by user interaction?</p>