c# - WCF VAB - How to achieve different validations on the same dto for different service methods? -

c# - WCF VAB - How to achieve different validations on the same dto for different service methods? -

i have userdto used request dto in 2 different service methods. 1 called create , other, update.

[operationcontract] [faultcontract(typeof(validationfault))] int create(userdto request); [operationcontract] [faultcontract(typeof(validationfault))] void update(userdto request);

for brevity, allow assume below userdto. when service method create called, expect both username , emailaddress validated per validator attributes , works expected. in case of update, want emailaddress validated, username validation should not happen. there way ?

i prefer not write dto there many utilize cases need userdtd , not want repeat same thing in multiple places.

[datacontract] public class userdto { [datamember] public int userid; [datamember] [notnullvalidator] public string username; [datamember] [notnullvalidator] public string emailaddress; }

as know there no way turn off [notnullvalidator] on userdto in update method. can minify duplication doing this:

[datacontract] public class userupdatedto : userdto { [datamember] public new string emailaddress; } void update(userupdatedto request);

c# wcf validation