Is it possible to have multiple dropdown boxes in one form that use the same database table in ASP.Net

My form has two dropdown fields for unit type.  They are UnitType and UnitTypeTwo.  Here is the SelectCommand of the SqlDataSource:

SELECT v.venId, v.venNm, v.venStAdd, v.venUnitType, ut.unitType, v.venUnit, 
v.venUnitTypeTwo, ut2.unitType, v.venUnitTwo, v.venCity, v.venStateAbbr, 
v.venZip, v.venCountry, v.venPh, v.venCmnts, v.venActive 
FROM vendors v 
LEFT JOIN unitTypes ut 
ON v.venUnitType = ut.unitTypeId 
LEFT JOIN unitTypes ut2 
ON v.venUnitTypeTwo = ut2.unitType 
WHERE ([venId] = @venId)

Here is the ItemTemplate of the FormView:

<ItemTemplate>
    <asp:Label Text='<%# Eval("venId") %>' runat="server" ID="venIdLabel" Visible="false" /><br />
    <div class="row">
        <div class="col-md-3">
            <strong>Vendor</strong><br />
            <asp:Label Text='<%# Bind("venNm") %>' runat="server" ID="venNmLabel" /><br />
        </div>
        <div class="col-md-3">
            <strong>Address</strong><br />
            <asp:Label Text='<%# Bind("venStAdd") %>' runat="server" ID="venStAddLabel" /><br />
        </div>
        <div class="col-md-3">
            <strong>Unit Type</strong><br />
            <%--<asp:Label Text='<%# Bind("venUnitType") %>' runat="server" ID="venUnitTypeLabel" /><br />--%>
            <asp:Label Text='<%# Bind("ut.unitType") %>' runat="server" ID="venUnitTypeLabel" /><br />
        </div>
        <div class="col-md-3">
            <strong>Unit</strong><br />
            <asp:Label Text='<%# Bind("venUnit") %>' runat="server" ID="venUnitLabel" /><br />
        </div>
    </div>
    <div class="row">
        <div class="col-md-3">
            <strong>Unit Type</strong><br />
            <%--<asp:Label Text='<%# Bind("venUnitTypeTwo") %>' runat="server" ID="venUnitTypeTwoLabel" /><br />--%>
            <asp:Label Text='<%# Bind("ut2.unitType") %>' runat="server" ID="venUnitTypeTwoLabel" /><br />
        </div>
        <div class="col-md-3">
            <strong>Unit</strong><br />
            <asp:Label Text='<%# Bind("venUnitTwo") %>' runat="server" ID="venUnitTwoLabel" /><br />
        </div>
        <div class="col-md-3">
            <strong>City:</strong><br />
            <asp:Label Text='<%# Bind("venCity") %>' runat="server" ID="venCityLabel" /><br />
        </div>
        <div class="col-md-3">
            <strong>State</strong><br />
            <asp:Label Text='<%# Bind("venStateAbbr") %>' runat="server" ID="venStateAbbrLabel" /><br />
        </div>
    </div>
    <div class="row">
        <div class="col-md-3">
            <strong>Zip Code</strong><br />
            <asp:Label Text='<%# Bind("venZip") %>' runat="server" ID="venZipLabel" /><br />
        </div>
        <div class="col-md-3">
            <strong>Country</strong><br />
            <asp:Label Text='<%# Bind("venCountry") %>' runat="server" ID="venCountryLabel" /><br />
        </div>
        <div class="col-md-3">
            <strong>Phone</strong><br />
            <asp:Label Text='<%# Bind("venPh") %>' runat="server" ID="venPhLabel" /><br />
        </div>
        <div class="col-md-3">
            <strong>Active</strong><br />
            <asp:CheckBox Checked='<%# Bind("venActive") %>' runat="server" ID="venActiveCheckBox"
                Enabled="false" /><br />
        </div>
    </div>
    <div class="row">
        <div class="col-md-3">
            <strong>Comments</strong><br />
            <asp:Label Text='<%# Bind("venCmnts") %>' runat="server" ID="venCmntsLabel" /><br />
        </div>
    </div>
    <asp:LinkButton runat="server" Text="Edit" CommandName="Edit" ID="EditButton" CausesValidation="False"
        CssClass="cmdlinkpdg" />&nbsp;<%--<asp:LinkButton runat="server" Text="Delete" CommandName="Delete" ID="DeleteButton" CausesValidation="False" />&nbsp;--%><asp:LinkButton
            runat="server" Text="New" CommandName="New" ID="NewButton" CausesValidation="False" />
</ItemTemplate>

The first dropdown list works just fine until I modify the SelectCommand to include the value of the second unit type.  How do I need to modify the FormView or the SelectCommand, or both - if this is possible?

Thanks, J.