fix example

CS/ODataService/Controllers/ActionsController.cs

@@ -1,11 +1,8 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
+using System.Linq;
 using DevExpress.Xpo;
-using Microsoft.AspNet.OData;
-using Microsoft.AspNet.OData.Routing;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.OData.Routing.Controllers;
+using Microsoft.AspNetCore.OData.Routing.Attributes;
 using ODataService.Helpers;
 using ODataService.Models;
 
@@ -16,15 +13,15 @@ public class ActionsController : ODataController {
         public ActionsController(UnitOfWork uow) {
             this.Session = uow;
         }
-        [ODataRoute("InitializeDatabase")]
+        [Route("odata/InitializeDatabase")]
         public IActionResult InitializeDatabase() {
             DemoDataHelper.CleanupDatabase(Session);
             DemoDataHelper.CreateDemoData(Session);
             return Ok();
         }
 
         [HttpGet]
-        [ODataRoute("TotalSalesByYear(year={year})")]
+        [Route("odata/TotalSalesByYear(year={year})")]
         public IActionResult TotalSalesByYear(int year) {
             decimal result = Session.Query<Order>()
                     .Where(o => o.Date.Value.Year == year)

CS/ODataService/Controllers/ContractController.cs

@@ -1,8 +1,12 @@
 using System;
 using System.Linq;
 using DevExpress.Xpo;
-using Microsoft.AspNet.OData;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.OData.Deltas;
+using Microsoft.AspNetCore.OData.Formatter;
+using Microsoft.AspNetCore.OData.Query;
+using Microsoft.AspNetCore.OData.Results;
+using Microsoft.AspNetCore.OData.Routing.Controllers;
 using ODataService.Helpers;
 using ODataService.Models;
 

CS/ODataService/Controllers/CustomerController.cs

@@ -1,8 +1,12 @@
 using System;
 using System.Linq;
 using DevExpress.Xpo;
-using Microsoft.AspNet.OData;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.OData.Deltas;
+using Microsoft.AspNetCore.OData.Formatter;
+using Microsoft.AspNetCore.OData.Query;
+using Microsoft.AspNetCore.OData.Results;
+using Microsoft.AspNetCore.OData.Routing.Controllers;
 using ODataService.Helpers;
 using ODataService.Models;
 

CS/ODataService/Controllers/DocumentsController.cs

@@ -1,8 +1,11 @@
 using System;
 using System.Linq;
 using DevExpress.Xpo;
-using Microsoft.AspNet.OData;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.OData.Formatter;
+using Microsoft.AspNetCore.OData.Query;
+using Microsoft.AspNetCore.OData.Results;
+using Microsoft.AspNetCore.OData.Routing.Controllers;
 using ODataService.Helpers;
 using ODataService.Models;
 

CS/ODataService/Controllers/OrderController.cs

@@ -1,9 +1,12 @@
 using System;
 using System.Linq;
 using DevExpress.Xpo;
-using Microsoft.AspNet.OData;
-using Microsoft.AspNet.OData.Routing;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.OData.Deltas;
+using Microsoft.AspNetCore.OData.Formatter;
+using Microsoft.AspNetCore.OData.Query;
+using Microsoft.AspNetCore.OData.Results;
+using Microsoft.AspNetCore.OData.Routing.Controllers;
 using ODataService.Helpers;
 using ODataService.Models;
 
@@ -100,7 +103,7 @@ public IActionResult Patch([FromODataUri] int key, Delta<Order> order) {
 
         [HttpPost]
         [HttpPut]
-        [ODataRoute("Order({key})/OrderDetails")]
+        [Route("Order({key})/OrderDetails")]
         public IActionResult AddToOrderDetails([FromODataUri] int key, OrderDetail orderDetail) {
             Order order = Session.GetObjectByKey<Order>(key);
             if(order == null) {

CS/ODataService/Controllers/OrderDetailController.cs

@@ -1,7 +1,11 @@
 using System.Linq;
 using DevExpress.Xpo;
-using Microsoft.AspNet.OData;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.OData.Deltas;
+using Microsoft.AspNetCore.OData.Formatter;
+using Microsoft.AspNetCore.OData.Query;
+using Microsoft.AspNetCore.OData.Results;
+using Microsoft.AspNetCore.OData.Routing.Controllers;
 using ODataService.Helpers;
 using ODataService.Models;
 

CS/ODataService/Controllers/ProductController.cs

@@ -1,8 +1,12 @@
 using System;
 using System.Linq;
 using DevExpress.Xpo;
-using Microsoft.AspNet.OData;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.OData.Deltas;
+using Microsoft.AspNetCore.OData.Formatter;
+using Microsoft.AspNetCore.OData.Query;
+using Microsoft.AspNetCore.OData.Results;
+using Microsoft.AspNetCore.OData.Routing.Controllers;
 using ODataService.Helpers;
 using ODataService.Models;
 

CS/ODataService/Helpers/ApiHelper.cs

@@ -2,8 +2,8 @@
 using System.Collections;
 using System.Net;
 using DevExpress.Xpo;
-using Microsoft.AspNet.OData;
 using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.OData.Deltas;
 
 namespace ODataService.Helpers {
     public static class ApiHelper {

CS/ODataService/Helpers/UriHelper.cs

@@ -1,11 +1,6 @@
 using System;
-using System.Collections.Generic;
 using System.Linq;
-using Microsoft.AspNet.OData;
-using Microsoft.AspNet.OData.Extensions;
-using Microsoft.AspNet.OData.Routing;
 using Microsoft.AspNetCore.Http;
-using Microsoft.AspNetCore.Mvc.Routing;
 using Microsoft.OData.UriParser;
 using ODataService.Models;
 

CS/ODataService/Models/SingletonEdmModel.cs

@@ -1,11 +1,9 @@
 using DevExpress.Data.Filtering;
 using DevExpress.Xpo;
 using DevExpress.Xpo.Metadata;
-using Microsoft.AspNet.OData.Builder;
 using Microsoft.OData.Edm;
+using Microsoft.OData.ModelBuilder;
 using ODataService.Helpers;
-using System;
-using System.Collections.Generic;
 using System.Linq;
 
 namespace ODataService.Models {

CS/ODataService/ODataService.csproj

@@ -4,11 +4,11 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="DevExpress.Xpo" Version="24.2.6" />
-    <PackageReference Include="Microsoft.AspNetCore.OData" Version="7.7.8" />
+    <PackageReference Include="Microsoft.AspNetCore.OData" Version="9.3.2" />
     <PackageReference Include="Microsoft.Data.SqlClient" Version="5.2.2" />
     <PackageReference Include="System.Configuration.ConfigurationManager" Version="8.0.1" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.10.0"/>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.10.0"/>
-    <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="4.10.0"/>
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.10.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.10.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="4.10.0" />
   </ItemGroup>
 </Project>

CS/ODataService/Startup.cs

@@ -1,17 +1,16 @@
-using System;
-using System.Linq;
-using DevExpress.Xpo.DB;
-using Microsoft.AspNet.OData.Batch;
-using Microsoft.AspNet.OData.Extensions;
+using DevExpress.Xpo.DB;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
-using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.ModelBinding.Validation;
+using Microsoft.AspNetCore.OData;
+using Microsoft.AspNetCore.OData.Batch;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using ODataService.Helpers;
 using ODataService.Models;
+using System;
+using System.Linq;
 
 namespace ODataService
 {
@@ -27,12 +26,15 @@ public Startup(IConfiguration configuration)
         // This method gets called by the runtime. Use this method to add services to the container.
         public void ConfigureServices(IServiceCollection services)
         {
-            services.AddOData();
-            services.AddODataQueryFilter();
-            services.AddMvc(options => {
-                options.EnableEndpointRouting = false;
-                options.ModelValidatorProviders.Clear();
-            });
+            services.AddControllers()
+                .AddOData(opt => opt
+                    .Select()
+                    .Filter()
+                    .OrderBy()
+                    .Expand()
+                    .Count()
+                    .SetMaxTop(null)
+                    .AddRouteComponents("odata", SingletonEdmModel.GetEdmModel()));
 
             services.AddSingleton<IObjectModelValidator, CustomModelValidator>();
 
@@ -50,12 +52,11 @@ public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
                 app.UseDeveloperExceptionPage();
             }
 
-            app.UseODataBatching();
+            app.UseRouting();
 
-            app.UseMvc(b =>
+            app.UseEndpoints(endpoints =>
             {
-                b.Count().Filter().OrderBy().Expand().Select().MaxTop(null);
-                b.MapODataServiceRoute("odata", "odata", SingletonEdmModel.GetEdmModel(), new DefaultODataBatchHandler());
+                endpoints.MapControllers();
             });
         }
     }

CS/Tests/ODataTestsBase.cs

@@ -21,7 +21,7 @@ protected Container GetODataContainer() {
         [OneTimeSetUp]
         public void OneTimeSetup() {
             string appPath = Path.GetDirectoryName(this.GetType().Assembly.Location);
-            appPath = Path.GetFullPath(Path.Combine(appPath, "..", "..", "..", "..", "ODataService", "bin", "debug", "netcoreapp3.1"));
+            appPath = Path.GetFullPath(Path.Combine(appPath, "..", "..", "..", "..", "ODataService", "bin", "debug", "net8"));
             dotnetProcess = Process.Start(new ProcessStartInfo("dotnet") { WorkingDirectory = appPath, Arguments = "ODataService.dll" });
         }
 

CS/Tests/Tests.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net8</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.4.0" />

README.md

@@ -1,23 +1,22 @@
 <!-- default badges list -->
-![](https://img.shields.io/endpoint?url=https://codecentral.devexpress.com/api/v1/VersionRange/223364607/23.2.1%2B)
 [![](https://img.shields.io/badge/Open_in_DevExpress_Support_Center-FF7200?style=flat-square&logo=DevExpress&logoColor=white)](https://supportcenter.devexpress.com/ticket/details/T835143)
 [![](https://img.shields.io/badge/📖_How_to_use_DevExpress_Examples-e9f6fc?style=flat-square)](https://docs.devexpress.com/GeneralInformation/403183)
 [![](https://img.shields.io/badge/💬_Leave_Feedback-feecdd?style=flat-square)](#does-this-example-address-your-development-requirementsobjectives)
 <!-- default badges end -->
-# How to Implement OData v4 Service with XPO (.NET Core 3.1)
+# How to Implement OData v4 Service with XPO (.NET 8)
 
 > **Note**: It is much easier to use the **[Web API Service](https://docs.devexpress.com/eXpressAppFramework/403394/backend-web-api-service)** with integrated authorization & CRUD operations based on ASP.NET Core OData 8.0 (OData v4) powered by EF Core and XPO ORM library instead. For more information, see [A 1-Click Solution for CRUD Web API Services with Role-based Access Control via EF Core & XPO (FREE)](https://community.devexpress.com/blogs/news/archive/2022/06/20/a-one-click-solution-for-role-based-access-control-asp-net-core-web-api-services-via-entity-framework-core-and-xpo-v22-1.aspx).
 
 ----------------
 
-This example demonstrates how to create **an ASP.NET Core 3.1 Web API** project and provide a simple REST API using the XPO ORM for data access. For the .NET Framework-based example, refer to [How to Implement OData v4 Service with XPO (.NET Framework)](https://github.com/DevExpress-Examples/XPO_how-to-implement-odata4-service-with-xpo).
+This example demonstrates how to create **an ASP.NET 8** project and provide a simple REST API using the XPO ORM for data access. For the .NET Framework-based example, refer to [How to Implement OData v4 Service with XPO (.NET Framework)](https://github.com/DevExpress-Examples/XPO_how-to-implement-odata4-service-with-xpo).
 
 ## Prerequisites
 
-* [Visual Studio 2019](https://visualstudio.microsoft.com/vs/) with the following workloads:
+* [Visual Studio 2022](https://visualstudio.microsoft.com/vs/) with the following workloads:
   * **ASP.NET and web development**
-  * **.NET Core cross-platform development**
-* [.NET Core SDK 3.1 or later](https://www.microsoft.com/net/download/all)
+  * **.NET cross-platform development**
+* [.NET 8.0 SDK or later](https://www.microsoft.com/net/download/all)
 
 ## Steps To Implement
 
@@ -41,38 +40,38 @@ This example demonstrates how to create **an ASP.NET Core 3.1 Web API** project
 ```
 - Modify the `ConfigureServices()` method in the *Startup.cs* file to initialize the data layer and register XPO UnitOfWork and OData services in Dependency Injection.
 ```cs
-  public void ConfigureServices(IServiceCollection services) {
-  	services.AddOData();
-  	services.AddODataQueryFilter();
-      services.AddMvc(options => {
-          options.EnableEndpointRouting = false;
-          options.ModelValidatorProviders.Clear();
-      });
-
-      services.AddSingleton<IObjectModelValidator, CustomModelValidator>();
-
-      services.AddXpoDefaultUnitOfWork(true, (DataLayerOptionsBuilder options) =>
-          options.UseConnectionString(Configuration.GetConnectionString("MSSqlServer"))
-          .UseAutoCreationOption(AutoCreateOption.DatabaseAndSchema) // debug only
-          .UseEntityTypes(ConnectionHelper.GetPersistentTypes()));
-  }
+public void ConfigureServices(IServiceCollection services) {
+    services.AddControllers()
+        .AddOData(opt => opt
+            .Select()
+            .Filter()
+            .OrderBy()
+            .Expand()
+            .Count()
+            .SetMaxTop(null)
+            .AddRouteComponents("odata", SingletonEdmModel.GetEdmModel()));
+
+    services.AddSingleton<IObjectModelValidator, CustomModelValidator>();
+
+    services.AddXpoDefaultUnitOfWork(true, (DataLayerOptionsBuilder options) =>
+        options.UseConnectionString(Configuration.GetConnectionString("MSSqlServer"))
+        .UseAutoCreationOption(AutoCreateOption.DatabaseAndSchema) // debug only
+        .UseEntityTypes(ConnectionHelper.GetPersistentTypes()));
+}
 ```
-- Modify the `Configure()` method in the *Startup.cs* file to add middleware for OData services and specify mapping for the service route. Note that we will pass the EDM model defined on the second step as a parameter (`SingletonEdmModel.GetEdmModel()`).
+- Modify the Configure() method in the Startup.cs file to configure routing and map controllers:
 ```cs
-  public void Configure(IApplicationBuilder app, IWebHostEnvironment env) {
-      if (env.IsDevelopment())
-      {
-          app.UseDeveloperExceptionPage();
-      }
-
-      app.UseODataBatching();
-
-      app.UseMvc(b =>
-      {
-          b.Count().Filter().OrderBy().Expand().Select().MaxTop(null);
-          b.MapODataServiceRoute("odata", "odata", SingletonEdmModel.GetEdmModel(), new DefaultODataBatchHandler());
-      });
-  }
+public void Configure(IApplicationBuilder app, IWebHostEnvironment env) {
+    if (env.IsDevelopment()) {
+        app.UseDeveloperExceptionPage();
+    }
+
+    app.UseRouting();
+
+    app.UseEndpoints(endpoints => {
+        endpoints.MapControllers();
+    });
+}
 ```
 
 ### Step 4: Implement OData Controllers for CRUD and Actions/Functions
@@ -86,3 +85,5 @@ This example demonstrates how to create **an ASP.NET Core 3.1 Web API** project
 
 (you will be redirected to DevExpress.com to submit your response)
 <!-- feedback end -->
+
+