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    <p>Well, here's your original code made generic:</p> <pre><code>public static List&lt;T&gt; SortResults&lt;T&gt;(List&lt;T&gt; listRow, string sortColumn, bool ascending) { switch (ascending) { case true: return (from r in listRow orderby r.GetType().GetField(sortColumn).GetValue(r) select r).ToList(); case false: return (from r in listRow orderby r.GetType().GetField(sortColumn).GetValue(r) descending select r).ToList(); default: return listRow; } } </code></pre> <p>Note how I've removed the type argument from the <code>ToList</code> calls - let the compiler work it out :)</p> <p>(As an aside, I don't know why the compiler requires a <code>default</code> case here. Maybe it just always assumes there will be unlisted potential values.)</p> <p>However, this can be made nicer:</p> <pre><code>public static List&lt;T&gt; SortResults&lt;T&gt;(List&lt;T&gt; listRow, string sortColumn, bool ascending) { FieldInfo field = typeof(T).GetField(sortColumn); Func&lt;T, object&gt; projection = t =&gt; field.GetValue(t); IEnumerable&lt;T&gt; sequence = ascending ? listRow.OrderBy(projection) : listRow.OrderByDescending(projection); return sequence.ToList(); } </code></pre> <p>This is still fairly inefficient (as it's using reflection) but at least it's not getting the <code>FieldInfo</code> separately for each item. If you want better performance, you can have a generic helper type which caches a delegate mapping a value to the field's value for each field, and then fetch that delegate once at the start of the method. It would definitely be more work, but I'd expect it to be an order of magnitude faster.</p>
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    1. COJon, I remember being confused by the default requirement for a boolean switch as well. Eric Lippert had a great writeup that describes why (http://blogs.msdn.com/ericlippert/archive/2009/08/13/four-switch-oddities.aspx) - case four is the one of interest. His punchline is that the "reachability analyzer is not very smart", but it doesn't really matter.
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    2. CO@Jon Skeet: Perhaps I'm doing something wrong, but I am only seeing the cached delegate version to be around twice to three times as fast.
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    3. CO@Jason: That does surprise me... but I'd have to see the code to know whether there's some reason, or whether I just had expectations which were too high...
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