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PONewbie view model issue.. to subclass or not to subclass
 

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    <p>Ok dead basic question, I'm a self taught developer so often I seem to have gaps where I can't decide which was is the right way... and this is one of them!! Simple I have a view model which has a collection of child items. But where these classes are defined I can't decide if the child object should be a subclass of the parent...</p> <p>For example this:</p> <pre><code>public class ActionChartViewModel { public IEnumerable&lt;ActionChartItemViewModel&gt; Items { get; set; } public TextPagingInfo TextPagingInfo { get; set; } } public class ActionChartItemViewModel { public int Id { get; set; } public string Name { get; set; } public string Rating { get; set; } public string Comment { get; set; } public string AssignedToUserName { get; set; } public string ContactRequested { get; set; } public bool Resolved { get; set; } public int NoteCount { get; set; } public string ContactDetails { get; set; } public int ResponseId { get; set; } } </code></pre> <p>Or this:</p> <pre><code>public class ActionChartViewModel { public IEnumerable&lt;Item&gt; Items { get; set; } public TextPagingInfo TextPagingInfo { get; set; } public class Item { public int Id { get; set; } public string Name { get; set; } public string Rating { get; set; } public string Comment { get; set; } public string AssignedToUserName { get; set; } public string ContactRequested { get; set; } public bool Resolved { get; set; } public int NoteCount { get; set; } public string ContactDetails { get; set; } public int ResponseId { get; set; } } } </code></pre> <p>I prefer the second one for a code readability and simplicity front, but I don't know the pros and cons of subclasses. What would you guys think??</p> <p>Thanks in advance!!</p>
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    1. COIn your sample, you say "subclass" but you should say "inner class" (a subclass is a class that inherits from another). Personally, I rarely use inner classes (sometimes I use private classes) and keep all the classes in separate files.
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    2. COahh ok, yeah the sub class vs inner class thing makes sense now. From a technical perspective is there any different with the above 2 examples? I do keep all my entity classes in separate files, but for view model related things I have been keeping all the viewmodel classes associated with one view in a single file which seemed to make better sense to me.
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