SOAP Service Calls for .NET - 1.0

// Methods with [WebMethod] are Web services
[WebMethod]
public bool InsertAssessment(Assessment a)
{
    return DAL.InsertAssessment(a);
}//close InsertAssessment

<wsdl:definitions xmlns:tns="http://tempuri.org/"  xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" targetNamespace="http://tempuri.org/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
  <wsdl:portType name="WebService1Soap">
    <wsdl:operation name="InsertAssessment">
      <wsdl:input message="tns:InsertAssessmentSoapIn" />
      <wsdl:output message="tns:InsertAssessmentSoapOut" />
    </wsdl:operation>
  </wsdl:portType>
</wsdl:definitions>

public bool InsertAssessment(Assessment a) {
    object[] results = this.Invoke("InsertAssessment", new object[] {
                a});
    return ((bool)(results[0]));
}

public System.Data.DataTable GetTable(string table, string col) {
    String method = getMethodName();
    object[] results = this.Invoke(method, new object[] {
                table,
                col});
    return ((System.Data.DataTable)(results[0]));
}

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using SoapCore;
using System.ServiceModel;

namespace SoapServer
{
    public class Startup
    {
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddSingleton<ICalculatorService, CalculatorService>();
        }

        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseRouting();

            app.UseEndpoints(endpoints =>
            {
                // All Methods inside CalculatorService class are Web services
                endpoints.UseSoapEndpoint<CalculatorService>("/CalculatorService.asmx", new SoapEncoderOptions(), SoapSerializer.DataContractSerializer);
            });
        }
    }
}

namespace SoapServer
{
    public class CalculatorService : ICalculatorService
    {
        public int Add(int a, int b) => a + b;

        public int Subtract(int a, int b) => a - b;

        public int Multiply(int a, int b) => a * b;

        public int Divide(int a, int b) => b != 0 ? a / b : throw new System.DivideByZeroException();
    }
}