Drop down selected index changed on page load
<p>I have a drop down box that populates textbox values based on its value. It fires when it is changed but on pageload it doesnt fire. How do I get it to fire on page load?</p>

<pre><code>   protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {     
   TextBox3.Text = DropDownList1.SelectedValue;
        TextBox12.Text = DropDownList1.SelectedValue;
        TextBox21.Text = DropDownList1.SelectedValue;

     //etc
</code></pre>
