How to instantiate an asmx webservice object?

In Visual Studio 2008 to consume a webService with a method called HelloWorld and return a string from codebehind I would instantiate it in the following way:

wsService1.Service miWs = new wsService1.Service();

For Visual 2017 I can not find a way to instantiate it since the Service method does not appear to me.

Give me these options:

wsService1.HelloWorldRequest
wsService1.HelloWorldRequestBody
wsService1.HelloWorldResponse
wsService1.HelloWorldResponseBody
wsService1.WebService1Soap
wsService1.WebService1SoapChanel
wsService1.WebService1SoapClient

How should I take the string parameter returned by the webservice?