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    <p>It the underlying type doesn't <strong>have</strong> an obvious <code>Name</code> member, this I can't see how this would work.</p> <p>If the problem is simpy that you only know the column to order by at runtime; then to order by a dynamic property you need to build an <code>Expression</code> on the fly. Here's some old code I have that does this, and should support "Name" and things like "Customer.Name" (child properties); I haven't tested it recently, though:</p> <pre><code>public static class OrderExtensions { public static IOrderedQueryable&lt;T&gt; OrderBy&lt;T&gt;(this IQueryable&lt;T&gt; source, string property) { return ApplyOrder&lt;T&gt;(source, property, "OrderBy"); } public static IOrderedQueryable&lt;T&gt; OrderByDescending&lt;T&gt;(this IQueryable&lt;T&gt; source, string property) { return ApplyOrder&lt;T&gt;(source, property, "OrderByDescending"); } public static IOrderedQueryable&lt;T&gt; ThenBy&lt;T&gt;(this IOrderedQueryable&lt;T&gt; source, string property) { return ApplyOrder&lt;T&gt;(source, property, "ThenBy"); } public static IOrderedQueryable&lt;T&gt; ThenByDescending&lt;T&gt;(this IOrderedQueryable&lt;T&gt; source, string property) { return ApplyOrder&lt;T&gt;(source, property, "ThenByDescending"); } static IOrderedQueryable&lt;T&gt; ApplyOrder&lt;T&gt;(IQueryable&lt;T&gt; source, string property, string methodName) { ParameterExpression arg = Expression.Parameter(typeof(T), "x"); Expression expr = arg; foreach(string prop in property.Split('.')) { // use reflection (not ComponentModel) to mirror LINQ expr = Expression.PropertyOrField(expr, prop); } Type delegateType = typeof(Func&lt;,&gt;).MakeGenericType(typeof(T), expr.Type); LambdaExpression lambda = Expression.Lambda(delegateType, expr, arg); return (IOrderedQueryable&lt;T&gt;) typeof(Queryable).GetMethods().Single( method =&gt; method.Name == methodName &amp;&amp; method.IsGenericMethodDefinition &amp;&amp; method.GetGenericArguments( ).Length ==2 &amp;&amp; method.GetParameters().Length == 2) .MakeGenericMethod(typeof(T), expr.Type) .Invoke(null, new object[] {source, lambda}); } } </code></pre>
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    1. USMarc Gravell
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    1. CO+1 Excellent! Exactly what i needed. :)
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