Skip to main content
All docs
V24.2
.NET 8.0+
  • The page you are viewing does not exist in the .NET Framework 4.6.2+ platform documentation. This link will take you to the parent topic of the current section.

DevExpress v24.2 Update — Your Feedback Matters

Our What's New in v24.2 webpage includes product-specific surveys. Your response to our survey questions will help us measure product satisfaction for features released in this major update and help us refine our plans for our next major release.

Take the survey Not interested

XPObjectSpaceProviderBuilderExtensions.AddXpo<TContext>(IObjectSpaceProviderServiceBasedBuilder<TContext>, Action<IServiceProvider, XPObjectSpaceProviderOptions>) Method

Adds the XPObjectSpaceProvider to your ASP.NET Core Blazor application.

Namespace: DevExpress.ExpressApp.ApplicationBuilder

Assembly: DevExpress.ExpressApp.Xpo.v24.2.dll

NuGet Package: DevExpress.ExpressApp.Xpo

#Declaration

public static IObjectSpaceProviderServiceBasedBuilder<TContext> AddXpo<TContext>(
    this IObjectSpaceProviderServiceBasedBuilder<TContext> builder,
    Action<IServiceProvider, XPObjectSpaceProviderOptions> configureOptions
)
    where TContext : IXafApplicationBuilder<TContext>, IAccessor<IServiceCollection>

#Parameters

Name Type Description
builder IObjectSpaceProviderServiceBasedBuilder<TContext>

Allows you to register and configure Object Space Providers in your application, and chain further provider registrations.

configureOptions Action<IServiceProvider, XPObjectSpaceProviderOptions>

Options that you can use to configure the XPO Object Space Provider.

#Type Parameters

Name Description
TContext

The IBlazorApplicationBuilder type.

#Returns

Type Description
IObjectSpaceProviderServiceBasedBuilder<TContext>

Allows you to register and configure Object Space Providers in your application, and chain further provider registrations.

#Remarks

The following example demonstrates how to use this method:

File: MySolution.Blazor.Server\Startup.cs.

using DevExpress.ExpressApp.ApplicationBuilder;
using DevExpress.ExpressApp.Blazor.ApplicationBuilder;
// ...
public class Startup {
   // ...
    public void ConfigureServices(IServiceCollection services) {
        // ...
        services.AddXaf(Configuration, builder => {
            builder.UseApplication<MySolutionBlazorApplication>();
            builder.ObjectSpaceProviders
                .AddXpo((serviceProvider, options) => {
                    string connectionString = null;
                    if(Configuration.GetConnectionString("ConnectionString") != null) {
                        connectionString = Configuration.GetConnectionString("ConnectionString");
                    }
                    ArgumentNullException.ThrowIfNull(connectionString);
                    options.ConnectionString = connectionString;
                })
                .AddNonPersistent();
        });
        // ...
    }
}
See Also