protected void btnInvoke_Click(object sender, EventArgs e)
        {
            HelloWorldService.HelloWorldWebService helloWorldService = new HelloWorldService.HelloWorldWebService();

            Response.Write(helloWorldService.HelloWorld());
        }
        protected void btnInvoke_Click(object sender, EventArgs e)
        {
            HelloWorldService.HelloWorldWebService helloWorldService = new HelloWorldService.HelloWorldWebService();

            Response.Write(helloWorldService.HelloWorld());
        }