Bindingsource error value does not fall within the expected range
<p><img src="http://i.stack.imgur.com/IKR3S.jpg" alt="enter image description here">I am trying to add BindingSource to my default.aspx.  In properties window, when I click on triangle for datasource, a message box appears saying </p>

<p>Value does not fall within the expected range</p>

<p>Why is that?  How can I set it?
Thanks</p>
