Hi Jimmy,
If I understand correctly, then you're asking why the ASPxComboBox is not on the same line as the DropDownList? All our ASPx editors are rendered as tables and it's not possible to put 2 tables next to each other unless they're are embedded in another table. You can easily put these 3 ASPxComboBox controls into a table on the same row:
<table>
<tr>
<td style="width: 100px">
<dxe:ASPxComboBox ID="ASPxComboBox1" runat="server"></dxe:ASPxComboBox>
</td>
<td style="width: 100px">
<dxe:ASPxComboBox ID="ASPxComboBox2" runat="server"></dxe:ASPxComboBox>
</td>
<td style="width: 100px">
<dxe:ASPxComboBox ID="ASPxComboBox3" runat="server"></dxe:ASPxComboBox>
</td>
</tr>
</table>
Thanks.