title: Drop down selected index changed on page load
body: <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>