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    <p>Edited answer: for the flattened target class C</p> <pre><code>public class C { public string strC1; public string strC2; public string strC3; public int x; public int y; public bool direction; } </code></pre> <p>Just use the SelectMany flattening method and union it a few times...</p> <pre><code>var C1 = A1.SelectMany(p =&gt; p.var1, (p,q) =&gt; new C(){ strC1 = q.strA, strC2 = q.strB, strC3 = q.strC, x = p.x, y = p.y, direction = true } ).Union( A1.SelectMany(p =&gt; p.var2, (p,q) =&gt; new C(){ strC1 = q.strA, strC2 = q.strB, strC3 = q.strC, x = p.x, y = p.y, direction = true }) ).Union( A1.SelectMany(p =&gt; p.var3, (p,q) =&gt; new C(){ strC1 = q.strA, strC2 = q.strB, strC3 = q.strC, x = p.x, y = p.y, direction = false }) ).ToList(); </code></pre> <p>edit2: just realised I repeated the same function 3 times above. A more succinct way of writing this would be:</p> <pre><code>var fn1 = new Func&lt;A, B, C&gt;( (p,q) =&gt; new C(){ strC1 = q.strA, strC2 = q.strB, strC3 = q.strC, x = p.x, y = p.y, direction = !p.var3.Contains(q) }); var C1 = A1.SelectMany(p =&gt; p.var1, fn1 ).Union( A1.SelectMany(p =&gt; p.var2, fn1) ).Union( A1.SelectMany(p =&gt; p.var3, fn1) ).ToList(); </code></pre> <p>edit3 - direction is now false in the above example when coming from the var3 list</p> <p>Heres an article explaining SelectMany a bit more... <a href="http://dotnet.dzone.com/news/selectmany-probably-the-most-p" rel="nofollow">http://dotnet.dzone.com/news/selectmany-probably-the-most-p</a></p>
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    1. USJames S
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    1. POLINQ create new list from elements of outer and inner list
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    1. COThanks a lot.That's exactly what was required.
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    2. COThanks also for the link provided on SelectMany.
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    3. CONo worries - also just realised that there is a more succinct way of writing this without repeating the same function 3 times - as shown in the edit above!
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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