asp.net mvc - Combine data annotation attributes -

asp.net mvc - Combine data annotation attributes -

i have collection of several attributes should used ui , validation. illustration currency field, have add together ui hint, validation logic, , display formatting. result, class looks crowded.

public class model { [uihint("currency")] [displayformat(applyformatineditmode = true, dataformatstring = "{0:c}")] [customregularexpression(currency.validationpattern, onlyonclientside = true)] [setmetadataforcustommodelbinder("currency")] public double? cost { get; set; } [uihint("currency")] [displayformat(applyformatineditmode = true, dataformatstring = "{0:c}")] [customregularexpression(currency.validationpattern, onlyonclientside = true)] [setmetadataforcustommodelbinder("currency")] public double? turn a profit { get; set; } }

is there way create [currency] attribute combines functionality of these attributes 1 simple attribute? goal create following:

public class model { [currency] public double? cost { get; set; } [currency] public double? turn a profit { get; set; } }

edit: clarify, have tried creating custom attribute, there no interfaces exposed allow me implement functionality of different attributes. can subclass validationattribute, cannot subclass uihintattribute. other potential solutions i'm missing?

according post , reference post phil haack's article can create custom associatedmetadataprovider adds attributes need. have this:

public class mycustommetadataprovider : dataannotationsmodelmetadataprovider { protected override modelmetadata createmetadata(ienumerable<attribute> attributes, type containertype, func<object> modelaccessor, type modeltype, string propertyname) { var attributelist = attributes.tolist(); if (attributelist.oftype<currencyattribute>().any()) { attributelist.add(new uihintattribute("currency")); attributelist.add(new displayformatattribute { applyformatineditmode = true, dataformatstring = "{0:c}" }); } homecoming base.createmetadata(attributelist, containertype, modelaccessor, modeltype, propertyname); } }

and in application start event:

modelmetadataproviders.current = new mycustommetadataprovider();

asp.net-mvc validation