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    <p>First of all, I think you are over-complicating the way you're doing the control. If you were to use LINQ or EF for your database access, you could do this with 2 nested repeaters and no complicated code behind. However, you can start by simplifying the query down to something like this:</p> <pre><code>SELECT * FROM tblperiods p CROSS JOIN tblrooms r LEFT JOIN tblbookings b ON p.period_id = b.period_id AND r.room_id = b.room_id AND b.booking_date = '2012-08-01' </code></pre> <p>This will get you enough information to produce the whole output in a single query for a given day. If you don't want to use EF or LINQ-to-SQL, you can still do a bit of LINQ magic to separate this out further by room, which you can then use for your databinding (forgive the C#, VB.NET is a bit rusty!):</p> <pre><code>DataTable dt = new DataTable(); dt.Fill(objDataReader); // Loads all data into the DataTable var groupedRows = dt.Rows.Cast&lt;DataRow&gt;().GroupBy(row =&gt; new { RoomId = (int) row["room_id"], RoomName = (string) row["room_name"] }); rpRows.DataSource = groupedRows; rpRows.DataBind(); </code></pre> <p>Then you would have Repeaters like so:</p> <pre><code>&lt;table&gt; &lt;thead&gt;&lt;tr&gt;&lt;th&gt;Rooms &amp;amp; Resources&lt;/th&gt; &lt;asp:Repeater runat="server" id="rpHeader"&gt; &lt;ItemTemplate&gt; &lt;td&gt;&lt;%# Eval("period_name") %&gt;&lt;/td&gt; &lt;/ItemTemplate&gt; &lt;/asp:Repeater&gt; &lt;/tr&gt;&lt;/thead&gt; &lt;asp:Repeater runat="server" id="rpRows"&gt; &lt;ItemTemplate&gt; &lt;tr&gt; &lt;th&gt;&lt;!-- Put room header stuff here --&gt;&lt;%# Eval("Key.RoomName") %&gt;&lt;/th&gt; &lt;asp:Repeater runat="server" DataSource="&lt;%# Container.DataItem %&gt;"&gt; &lt;ItemTemplate&gt; &lt;td&gt; &lt;!-- Per-booking info --&gt; &lt;asp:Label runat="server" Visible='&lt;%# Eval("booking_id") == DBNull.Value %&gt;'&gt;Not Booked&lt;/asp:label&gt; &lt;asp:Label runat="server" Visible='&lt;%# Eval("booking_id") != DBNull.Value %&gt;'&gt;Booked!&lt;/asp:label&gt; &lt;/td&gt; &lt;/ItemTemplate&gt; &lt;/asp:Repeater&gt; &lt;/tr&gt; &lt;/ItemTemplate&gt; &lt;/asp:Repeater&gt; &lt;/table&gt; </code></pre> <p>I've not given the code for databinding the header row, but this is simply a <code>select * from tbl_periods</code></p> <p>Note that none of this code was tested, and probably needs a little adjusting on the data binding.</p>
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    1. POASP.Net Nested Repeater Logic Hell
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    1. COthanks for the SQL never thought of pulling it out in one quick hit. Dumping into a datatable makes alot of sense too. So in order to get the period headers I would still need 3 nested repeaters correct? have added your suggestions above but upon running I get an error that room_name does not exist looking at the data I see column headers do not exist how would I reference the room_name by its position in the datatable, in this case 5?
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    2. COgot the room names in now, my mistake not paying attention :-) Having more of a play with your suggestions and will letyou know how I get on with it.
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    3. COYou'd need a third repeater, but it wouldn't be nested. I've amended by answer to show where it would go. As for the RoomName, the intention was to access it from the Key property of the grouping - that's where the .Select(new { ... }) bit after GroupBy came in
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