ASP.NET Core WebService

Question

I´m new to asp.net core, and I´m having trouble with injections on a web service.

namespace Web.WebServices
{
    public class InstallService : IService
    {
        private SQLContext _context;

        public InstallService(SQLContext context) 
        {
            _context = context;
        }  

        public string Fcn(string msg)
        {
            //Just for testing, the rest of the code is not altering the results
            return string.Join(string.Empty, msg.Reverse());
        }        
    }

    [ServiceContract]
    public interface IService
    {
        [OperationContract]
        string Fcn(string msg);

    }
}

This is the ConfigureService method:

    public void ConfigureServices(IServiceCollection services)
    {            
        services.AddMvc();
        services.AddSingleton(Configuration);
        services.AddDbContext<SQLContext>(options => options.UseSqlServer(Configuration.GetConnectionString("SQLConnection")));
        services.AddSoapExceptionTransformer((ex) => ex.Message);            
        services.AddScoped<IService, InstallService>();

    }

And the configure method:

app.UseSoapEndpoint<InstallService>("/ServicePath.asmx", new BasicHttpBinding());

Now the problem, when I try to consume the webservice I get the error:

"System.ServiceModel.FaultException. Non-static method requires a target"

And if I remove the injection the webservice works fine.

namespace Web.WebServices
{
    public class InstallService : IService
    {
        public string Fcn(string msg)
        {
            return string.Join(string.Empty, msg.Reverse());
        }        
    }

    [ServiceContract]
    public interface IService
    {
        [OperationContract]
        string Fcn(string msg);

    }
}

And the Configure service method:

   public void ConfigureServices(IServiceCollection services)
    {            
        services.AddMvc();
        services.AddSingleton(Configuration);
        services.AddDbContext<SQLContext>(options => options.UseSqlServer(Configuration.GetConnectionString("SQLConnection")));
        services.AddSoapExceptionTransformer((ex) => ex.Message);            
        services.AddScoped(new InstallService());

    }

But I need to use the webService to save data to the SQL Server.

I´m almost sure something wrong is not right, but I can´t figure it out.

You are using ASP.NET Core to host WCF services? Why not just create a WCF on ASP.NET project? — Camilo Terevinto, Aug 29 '18 at 23:22
Do you use [SoapCore](https://github.com/DigDes/SoapCore) or implement your own `UseSoapEndpoint`? — Edward, Aug 30 '18 at 02:34
services.AddScoped(new InstallService()); is your problem, don't do a new here — PmanAce, Aug 30 '18 at 02:42
I already have this webserver running, so I´m trying to append the webservice in it. Sorry, forgot to tell I´m using SoapCore — Rafael Roland Passarella, Aug 30 '18 at 10:45

score 0 · Answer 1 · answered Aug 30 '18 at 00:59

Your problem seems difference between

public class InstallService : IService
{
    private SQLContext _context;

    public InstallService(SQLContext context) 
    {
        _context = context;
    }  
}

And

public class InstallService : IService
{
}

You got this exception.

"System.ServiceModel.FaultException. Non-static method requires a target"

Probably you didn't get SQLContext instance.

Please check out Configuration.GetConnectionString("SQLConnection")) in your code.

How to read connection string in .NET Core?

https://learn.microsoft.com/en-us/ef/core/miscellaneous/connection-strings

Correct me if I'm wrong. :p

Thanks for the answer but I´m already using the SQLcontext in several other places, and it´s working fine. — Rafael Roland Passarella, Aug 30 '18 at 10:46

score 0 · Accepted Answer · answered Aug 30 '18 at 02:36

0

For using SoapCore, try to configure service like

            services.AddScoped<IService, InstallService>();

And then use service like below:

            app.UseSoapEndpoint<IService>("/ServicePath.asmx", new BasicHttpBinding());

answered Aug 30 '18 at 02:36

Edward

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I´ll try to implment the interface instead of the class, get back to you as soon as I try that. Thanks – Rafael Roland Passarella Aug 30 '18 at 10:51
THANKS! That was it, saved my day. – Rafael Roland Passarella Aug 30 '18 at 10:57

ASP.NET Core WebService

2 Answers2