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    <p>Here's a class that may get you started, though I haven't tested it much. Note that this will only work for classes that have a no-args constructor, and won't work for some types of recursive classes (e.g. a class with a property of its own type, such as a tree). You also may want to pre-populate more classes in the static constructor.</p> <pre><code>public static class PermutationGenerator { private static class Permutation&lt;T&gt; { public static IEnumerable&lt;T&gt; Choices { get; set; } } static PermutationGenerator() { Permutation&lt;int&gt;.Choices = new List&lt;int&gt; { -1, 0, 1 }.AsReadOnly(); Permutation&lt;string&gt;.Choices = new List&lt;string&gt; { null, "", "Hello World" }.AsReadOnly(); } public static IEnumerable&lt;T&gt; GetPermutations&lt;T&gt;() { if (Permutation&lt;T&gt;.Choices == null) { var props = typeof(T).GetProperties().Where(p =&gt; p.CanWrite); Permutation&lt;T&gt;.Choices = new List&lt;T&gt;(GeneratePermutations&lt;T&gt;(() =&gt; Activator.CreateInstance&lt;T&gt;(), props)).AsReadOnly(); } return Permutation&lt;T&gt;.Choices; } private static IEnumerable GetPermutations(Type t) { var method = typeof(PermutationGenerator).GetMethod("GetPermutations", new Type[] {}).MakeGenericMethod(t); return (IEnumerable)(method.Invoke(null,new object[] {})); } private delegate T Generator&lt;T&gt;(); private static IEnumerable&lt;T&gt; GeneratePermutations&lt;T&gt;(Generator&lt;T&gt; generator, IEnumerable&lt;PropertyInfo&gt; props) { if (!props.Any()) { yield return generator(); } else { var prop = props.First(); var rest = props.Skip(1); foreach (var propVal in GetPermutations(prop.PropertyType)) { Generator&lt;T&gt; gen = () =&gt; { var obj = generator(); prop.SetValue(obj, propVal, null); return (T)obj; }; foreach (var result in GeneratePermutations(gen, rest)) { yield return result; } } } } } </code></pre>
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    1. POGenerate all the possible permutations of a class
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    1. POGenerate all the possible permutations of a class
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    1. CO2 problems with this: 1) It's not really the question he asked (it fits the question title, but not the content). 2) Recursive solution isn't really the best idea in this case. Read this: http://msdn.microsoft.com/en-us/library/aa302371.aspx
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    2. COWow! Amazing work! This is not perfect, but I have to say that I am impress. I want you in my team! :P
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    3. CO@Joel Coehorn - can you elaborate on 1? If you call PermutationGenerator.GetPermutations<Client>() as in the question, you'll get a set of Client objects with all combinations of the different properties set, as requested.
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