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    <p>1 - You could add an extension method to <code>IEnumerable&lt;Employee&gt;</code> or <code>IQueryable&lt;Employee&gt;</code> that returns your <code>GenericSelectList</code>. Advantages - you can re-use against any collection of employee, i.e. a filtered list, and quite nice calling syntax; you can customise how the select list is formed on a case by case basis. Disadvantages - you'll have to write one of these methods for each type.</p> <p>2 - You could change that extension method to work with a generic, that works against <code>IEnumerable&lt;T&gt;</code> and produces a <code>GenericSetList</code> based on <code>Expression</code> inputs. Advantages - Your method is now truly generic, i.e. write once and re-use. You could do this in such a way that it combines with 1 so that your 1-per-class function uses the generic to save duplication. Disadvantages - assumes comfort in using expressions and the like.</p> <p>3 - You could have factory methods that return ViewModels.</p> <p>These things can also work in combination as well, and should help remove copy/paste code and promote re-use and testability.</p> <p>Edit - here is one way that no. 2 could be implemented (in VB but translation to C# is trivial). I would then add over-loads for the useful permutations of inputs.</p> <pre><code>Imports System.Runtime.CompilerServices Imports System.Linq.Expressions Module IQueryableExtensions &lt;Extension()&gt; Public Function ToSelectList(Of T)(source As IEnumerable(Of T), nameExpression As Expression(Of Func(Of T, String)), valueExpression As Expression(Of Func(Of T, String)), selectedExpression As Expression(Of Func(Of T, Boolean)), additionalItems As IEnumerable(Of SelectListItem)) As IEnumerable(Of SelectListItem) Return additionalItems.Union( source.Select(Function(x) New SelectListItem With { .Text = nameExpression.Compile.Invoke(x), .Value = valueExpression.Compile.Invoke(x), .Selected = selectedExpression.Compile.Invoke(x) } ) ) End Function End Module </code></pre> <p>Sample usage:</p> <pre><code> Dim People As New List(Of Person) From {New Person With {.Name = "Richard", .ID = 1}} Dim sl = People.ToSelectList(Function(p) p.Name, Function(p) p.ID, Function(p) p.ID = 1, {New SelectListItem With {.Value = 0, .Text = "Please Select A Person"}}) </code></pre>
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    1. POWhere should code to build view models go?
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    1. COI could do #2, in that I would add a generic response for select list generation. However, it would require reflection. Would it be unwise to use reflection in the repository?
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    2. COAre you saying reflection because you want to include the class name? There are other ways round that, give me a sec and I'll post a sample.
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    3. CO@TravisJ - there you go - a possible implementation with no reflection.
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