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Update (21st Sept 2016) - Thanks to Digbyswift for commenting that this solution still works in MVC5 also. Update (30th April 2012) - Note to people stumbling across this question from searches etc - the accepted answer is not how I ended up doing this - but I left it accepted because it might have worked in some cases. My own answer contains the final solution I used , which is reusable and will apply to any project. It's also confirmed to work in v3 and v4 of the MVC framework. I have the following model type (the names of the class and its properties have been changed to protect their identities): public class MyExampleModel { public string[] LongPropertyName { get; set; } } This property is then bound to a bunch (>150) of check boxes, where each one's input name is of course LongPropertyName . The form submits to url with an HTTP GET, and say the user selects three of those checkboxes - the url will have the query string ?LongPropertyName=a&LongPropertyName=b&LongPropertyName=c Big problem then is that if I select all (or even just over half!) the checkboxes, I exceed the maximum query string length enforced by the request filter on IIS! I do not want to extend that - so I want a way to trim down this query string (I know I can just switch to a POST - but even so I still want to minimize the amount of fluff in the data sent by the client). What I want to do is have the LongPropertyName bound to simply 'L' so the query string would become ?L=a&L=b&L=c but without changing the property name in code . The type in question already has a custom model binder (deriving from DefaultModelBinder), but it's attached to its base class - so I don't w

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