There are some demos of Adverting control. They're based upon this XML, take a look at the documentation for more infos.

For simplicity in these demos I've used only local image banners, but it's clear that inside CDATA section of the units you can specify any sort of html, from AdSense, AdBrite or any other marketing companies.

Extract banners form vendor group

This Ads will extract a random unit filtering the property group of the vendors, we want only banners from "orangeVendor" group, so we set Type="randomFiltered" FilterVendorGroup="orangeVendor".

orange 1 
<rec:Advertising ID="adsOrange" runat="server" XMLUrl="~/xml/Advertising.xml" 
                 Type="randomFiltered" FilterVendorGroup="orangeVendor" />

Extract banners by group

Also the units can be assigned to a specific group, and you can use it to filter them. In this example we extract only units with group equals to "graphic".

banner 1 
<rec:Advertising ID="adsUnits" runat="server" XMLUrl="~/xml/Advertising.xml" Type="randomFiltered" 
                 FilterUnitGroup="graphic" />

Extract banners with specified width/height

We can extract ads filtering their width and height, as we set it on the XML. These units contains a link, just for test.

unit 2

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 unit 1

As you can see, the randomized units are every different, thanks to the property PreventsBannerDuplication, true by default.

<table>
    <tbody>
        <tr>
            <td>
                <rec:Advertising ID="ads200x200_1" runat="server" XMLUrl="~/xml/Advertising.xml" 
                                    Type="randomFiltered" FilterUnitHeight="200" FilterUnitWidth="200" />
            </td>
            <td><p>Lorem ipsum ....</p></td>
            <td>
                <rec:Advertising ID="ads200x200_2" runat="server" XMLUrl="~/xml/Advertising.xml" 
                                    Type="randomFiltered" FilterUnitHeight="200" FilterUnitWidth="200" />
            </td>
        </tr>
    </tbody>
</table>

Extracts a specific banner

If you want a specific unit just use the Type exact and indicate IDVendor and IDUnit (or only IDUnit, if you're sure it's unique).

banner 3 
<rec:Advertising ID="adsExact" runat="server" XMLUrl="~/xml/Advertising.xml" Type="exact" 
                 IDVendor="vendorThree" IDUnit="unit1_2" />

Full random

Finally we can set a full random banner. By setting the property PreventsBannerDuplication="false" it can extract units already used in the random and randomFiltered banners.

banner 3 
<rec:Advertising ID="adsRandom" runat="server" XMLUrl="~/xml/Advertising.xml" Type="random" 
                 PreventsBannerDuplication="false" />