EFCoreObjectSpaceProviderBuilderExtensions.AddEFCore<TContext>(IObjectSpaceProviderBuilder<TContext>, Action<IServiceProvider, EFCoreObjectSpaceProviderOptionsBuilder>) Method

Adds the EFCoreObjectSpaceProvider<TDbContext> to your WinForms application.

Namespace: DevExpress.ExpressApp.ApplicationBuilder

Assembly: DevExpress.ExpressApp.EFCore.v25.1.dll

NuGet Package: DevExpress.ExpressApp.EFCore

Declaration

C#

public static DbContextBuilder<TContext> AddEFCore<TContext>(
    this IObjectSpaceProviderBuilder<TContext> builder,
    Action<IServiceProvider, EFCoreObjectSpaceProviderOptionsBuilder> configureObjectSpaceProviderOptions
)
    where TContext : IXafApplicationBuilder<TContext>, IAccessor<IServiceCollection>

VB.NET

<ExtensionAttribute>
Public Shared Function AddEFCore(Of TContext As {IXafApplicationBuilder(Of TContext), IAccessor(Of IServiceCollection)})(
    builder As IObjectSpaceProviderBuilder(Of TContext),
    configureObjectSpaceProviderOptions As Action(Of IServiceProvider, EFCoreObjectSpaceProviderOptionsBuilder)
) As DbContextBuilder(Of TContext)

Parameters

Name	Type	Description
builder	IObjectSpaceProviderBuilder<TContext>	Allows you to register and configure Object Space Providers in your application, and chain further provider registrations.
configureObjectSpaceProviderOptions	Action<IServiceProvider, EFCoreObjectSpaceProviderOptionsBuilder>	Options that allow you to configure the Object Space Provider.

Type Parameters

Name	Description
TContext	The IWinApplicationBuilder type.

Returns

Type	Description
DbContextBuilder<TContext>	Allows you to register and configure Object Space Providers in your application, and chain further provider registrations.

Remarks

This method must be used together with one of the following methods:

• WithDbContext<TDbContext>(Action<XafApplication, DbContextOptionsBuilder>, ServiceLifetime)
• WithAuditedDbContext<TContext>(DbContextBuilder<TContext>, Action<AuditedDbContextConfigurator>, ServiceLifetime)

The following example demonstrates how to use the AddEFCore method:

File: MySolution.Win\Startup.cs.

C#

using DevExpress.ExpressApp.ApplicationBuilder;
using DevExpress.ExpressApp.Win.ApplicationBuilder;
// ...
public class ApplicationBuilder : IDesignTimeApplicationFactory {
    public static WinApplication BuildApplication(string connectionString) {
        var builder = WinApplication.CreateBuilder();
        builder.UseApplication<MySolutionWindowsFormsApplication>();
        builder.ObjectSpaceProviders
            .AddEFCore(options => options.PreFetchReferenceProperties())
            .WithDbContext<MySolutionEFCoreDbContext>((application, options) => {
                // ...
            })
            .AddNonPersistent();
    }
    // ...
}