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.v24.1.dll

NuGet Package: DevExpress.ExpressApp.Xpo

Declaration

C#

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

VB.NET

<ExtensionAttribute>
Public Shared Function AddXpo(Of TContext As {IXafApplicationBuilder(Of TContext), IAccessor(Of IServiceCollection)})(
    builder As IObjectSpaceProviderServiceBasedBuilder(Of TContext),
    configureOptions As Action(Of IServiceProvider, XPObjectSpaceProviderOptions)
) As IObjectSpaceProviderServiceBasedBuilder(Of TContext)

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.

C#

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();
        });
        // ...
    }
}