Referenced WebService, class constructor with parameters

Unfortunately, the Web service reference proxy class (That is generated when you add a reference to a web service) does not have any Constructor, even if the original class have at the service-end.

If you really want to use a constructor, go to the Class definition of the proxy class that is generated and add the constructor that you require (You can copy the constructor code from the original class at service-end)

Problem is, every time you update reference, your proxy class will be overwritten and you will lose your constructor code.

To overcome this limitation, instead of modifying the proxy class, you can write a partial class for User class in your client project that will contain the constructor. In this case, even if the proxy class is overwritten, the partial class will remain intact and you will always be able to use the constructor.

Best of luck :)