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copied!<pre><code>private class PropertyItem { public PropertyInfo Property { get; set; } public List<object> PossibleValues { get; set; } public int CurrentIndex { get; set; } public int Count { get; set; } } public IEnumerable<T> GenerateCombinations<T>() where T : new() { return GenerateCombinations(typeof(T)).Cast<T>(); } public IEnumerable<object> GenerateCombinations(Type type) { // Collect nessecery information var constructor = type.GetConstructor(Type.EmptyTypes); var properties = ( from p in type.GetProperties() let values = p.GetCustomAttributes(typeof(CombinationsAttribute), true) .Cast<CombinationsAttribute>() .SelectMany(a => a.PossibleValues) .ToList() where values.Count > 0 select new PropertyItem { Property = p, PossibleValues = values, CurrentIndex = 0, Count = values.Count, } ) .ToList(); bool isDone; do { // Construct and return the current item var item = constructor.Invoke(new object[0]); foreach (var prop in properties) { prop.Property.SetValue(item, prop.PossibleValues[prop.CurrentIndex]); } yield return item; // Move the indices to the next item isDone = true; for (int i = 0; i < properties.Count; i++) { var prop = properties[i]; if (prop.CurrentIndex == prop.Count - 1) { prop.CurrentIndex = 0; } else { prop.CurrentIndex++;; isDone = false; break; } } } while (!isDone); } </code></pre> <p><strong>Usage:</strong></p> <pre><code>var allObjects1 = GenerateCombinations<MyClass>().ToList(); var allObjects2 = GenerateCombinations(typeof(MyClass)).ToList(); </code></pre>

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