1. appsettings.json:
"ConnectionStrings": {
"DefaultConnection": "Persist Security Info=False;User ID=sa;password=1234;Initial Catalog=ProdDB; Data Source=ASHRAFUL-IT\\SQL2017;Connection Timeout=100000;"
}
2. Install Nuget Package:
Microsoft.EntityFrameworkCore
Microsoft.EntityFrameworkCore.SqlServer
Microsoft.EntityFrameworkCore.Tools
Microsoft.EntityFrameworkCore.Design
3. Application DB Context:
public class ApplicationDBContext : DbContext
{
public ApplicationDBContext(DbContextOptions<applicationdbcontext> options)
: base(options)
{
}
public DbSet<productinfo> ProductInfos { get; set; }
}
4. Programm.cs/Startup.cs:
// Add services to the container.
builder.Services.AddControllersWithViews()
.AddJsonOptions(options =>
{
options.JsonSerializerOptions
.PropertyNamingPolicy = null;
});
builder.Services.AddDbContext<ApplicationDBContext>(dbContextOption => dbContextOption.UseSqlServer(builder.Configuration.GetConnectionString("DefaultConnection")));
builder.Services.AddScoped<IProductRepository, ProductService>();
===================================================
startup.cs:
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
readonly string MyAllowSpecificOrigins = "_myAllowSpecificOrigins";
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.AddControllers();
services.AddSwaggerGen(c =>
{
c.SwaggerDoc("v1", new OpenApiInfo { Title = "CRUDDotNet5", Version = "v1" });
});
services.AddDbContext<ProductDbContext>
(item=>item.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));
services.AddScoped<IProductRepository, ProductsRepository>();
services.AddCors(options =>
{
options.AddPolicy(name: MyAllowSpecificOrigins,
builder => builder.AllowAnyOrigin().AllowAnyMethod().AllowAnyHeader()
);
});
services.AddMvc().AddJsonOptions(o =>
{
o.JsonSerializerOptions.PropertyNamingPolicy = null;
o.JsonSerializerOptions.DictionaryKeyPolicy = null;
});
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
app.UseSwagger();
app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "CRUDDotNet5 v1"));
}
app.UseHttpsRedirection();
app.UseRouting();
app.UseCors(MyAllowSpecificOrigins);
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
});
}
}
=========================================================
5. Create Model :
public class ProductInfo
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int ProdId { get; set; }
public string ProdName { get; set; }
public decimal ProdPrice { get; set; }
}
6. Repository:
IProductRepository
ProductService
public interface IProductRepository
{
List<productinfo> GetProductInfos();
}
public class ProductService : IProductRepository
{
public ApplicationDBContext _applicationDBContext;
public ProductService(ApplicationDBContext applicationDBContext)
{
_applicationDBContext = applicationDBContext;
}
public List<productinfo> GetProductInfos()
{
return _applicationDBContext.ProductInfos.ToList();
}
}
7. Product Controller:
public class ProductController : Controller
{
IProductRepository _productRepository ;
public ProductController(IProductRepository productRepository)
{
_productRepository = productRepository;
}
public IActionResult Index()
{
return View();
}
public IActionResult GetProductInfos()
{
var res = _productRepository.GetProductInfos();
return Ok(Json(res));
}
}
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