c# - Compare attribute does not use Display attribute of compared property -

i have viewmodel used changing password, , uses compare dataannotation so:

[display(name = "new password")] public string new { get; set; }  [compare("new")] [display(name = "confirm password")] public string confirmpassword { get; set; } 

unfortunately compare attribute not utilize display attribute of compared property.

the error message displays as

'confirm password' , 'new' not match. 

which can see uses comparing property's display attribute, not compared property's.

i'll specify don't want use errormessage parameter because i'd hard-coding property name rather acquiring existing attribute. i'd keep solution best-practice possible.

how can make compare attribute utiliize display attribute of compared property?

i think may issue compare attribute, since can see otherdisplayname attribute in list of properties, , correctly uses display name property decorating ("confirm password" , not "confirmpassword").

one work around have found create new class inherits compareattribute, so:

public class comparewithdisplayname : compareattribute {     public comparewithdisplayname(string otherproperty) : base(otherproperty)     {     } } 

then use on property:

[display(name = "new password")] public string new { get; set; }   [display(name = "confirm password")] [comparewithdisplayname("new")] public string confirmpassword { get; set; } 

i have no idea why works. reflection or order in works out each property's display attribute is. creating custom version of it, perhaps ordering changed? either way, did trick me :)

edit 2 sorry, forgot add part needed client side validation, explained here. can either add in global.asax.cs file:

dataannotationsmodelvalidatorprovider.registeradapter(typeof(comparewithdisplayname), typeof(compareattributeadapter)) 

or implement iclientvalidatable interface on custom attribute. both of these shown in link