PropertyRepository.cs

using System;
using System.Runtime.CompilerServices;
using Xunit;

namespace Tests
{
    public class Dto1{}
    public class Dto2{}

    public interface IDbModel
    {
        Dto1 Dto1 { get; }
        Dto2 Dto2 { get; }
        object Dto99 { get; }
    }

    public class DbModel : IDbModel
    {
        public Dto1 Dto1 => this.GetData<Dto1>();
        public Dto2 Dto2 => this.GetData<Dto2>();
        public object Dto99 => this.GetData();
    }

    public static class Extensions
    {
        public static T GetData<T>(this object type, [CallerMemberName] string callerMember = "") where T : class
        {
            return new Repo().Get<T>(callerMember);
        }

        public static object GetData(this object type, [CallerMemberName] string callerMember = "")
        {
            return new Repo().Get(callerMember);
        }
    }

    public class Repo
    {
        public T Get<T>(string tableName) where T : class{
            //TODO : Db codes
            #region Db Simulation

            if (tableName == "Dto1") return new Dto1() as T;
            if (tableName == "Dto2") return new Dto2() as T;

            #endregion
            throw new NotSupportedException();
        }

        public object Get(string tableName){
            //TODO : Db codes
            #region DB simulation

            if (tableName == "Dto1") return new Dto1();
            if (tableName == "Dto2") return new Dto2();
            if (tableName == "Dto99") return "testing value";

            #endregion
            throw new NotSupportedException();
        }
    }

    public class Tests
    {
        [Fact]
        public void Testing()
        {
            var dbModel = new DbModel();
            Dto2 data1 = dbModel.Dto2;
            Dto1 data2 = dbModel.Dto1;
            object data3 = dbModel.Dto99;
        }
    }
}