Fixing Example: Update to 25.1.3

ASP.NET Core/ASP.NET Core.csproj

@@ -20,7 +20,8 @@
   </Target>
 
   <ItemGroup>
-    <PackageReference Include="DevExtreme.AspNet.Core" Version="25.1.*" />
+    <PackageReference Include="DevExtreme.AspNet.Core" Version="25.1.3" />
+    <PackageReference Include="DevExtreme.AspNet.Data" Version="5.1.0" />
   </ItemGroup>
 
 </Project>

ASP.NET Core/Controllers/CustomersController.cs

@@ -0,0 +1,13 @@
+using DevExtreme.AspNet.Data;
+using DevExtreme.AspNet.Mvc;
+using Microsoft.AspNetCore.Mvc;
+using ASP_NET_Core.Models;
+
+namespace ASP_NET_Core.Controllers;
+
+public class CustomersController : Controller {
+    [HttpGet]
+    public object GetCustomers(DataSourceLoadOptions loadOptions) {
+        return DataSourceLoader.Load(CustomersData.Customers, loadOptions);
+    }
+}

ASP.NET Core/Controllers/EmployeesController.cs

@@ -0,0 +1,56 @@
+using System.Linq;
+using DevExtreme.AspNet.Data;
+using DevExtreme.AspNet.Mvc;
+using Microsoft.AspNetCore.Mvc;
+using ASP_NET_Core.Models;
+using System.Text.Json;
+
+namespace ASP_NET_Core.Controllers {
+    public class EmployeesController: Controller {
+        [HttpGet]
+        public object GetEmployees(DataSourceLoadOptions loadOptions) {
+            return DataSourceLoader.Load(EmployeesData.Employees, loadOptions);
+        }
+
+        [HttpPost]
+        public IActionResult InsertEmployee(string values) {
+            var newItem = JsonSerializer.Deserialize<Employee>(values);
+            if(newItem == null) return BadRequest();
+
+            var nextId = EmployeesData.Employees.Any() ? EmployeesData.Employees.Max(e => e.ID) + 1 : 1;
+            newItem.ID = nextId;
+            EmployeesData.Employees.Add(newItem);
+
+            return Ok(new { ID = newItem.ID });
+        }
+
+        [HttpPut]
+        public IActionResult UpdateEmployee(int key, string values) {
+            var item = EmployeesData.Employees.FirstOrDefault(e => e.ID == key);
+            if(item == null) return NotFound();
+
+            var updated = JsonSerializer.Deserialize<Employee>(values);
+            if(updated == null) return BadRequest();
+
+            item.CustomerID = updated.CustomerID;
+            item.Address = updated.Address;
+            item.Phone = updated.Phone;
+
+            return Ok();
+        }
+
+        [HttpDelete]
+        public IActionResult DeleteEmployee(int key) {
+            var item = EmployeesData.Employees.FirstOrDefault(e => e.ID == key);
+            if(item == null) return NotFound();
+
+            EmployeesData.Employees.Remove(item);
+            return Ok();
+        }
+
+        [HttpGet]
+        public object GetCustomers(DataSourceLoadOptions loadOptions) {
+            return DataSourceLoader.Load(CustomersData.Customers, loadOptions);
+        }
+    }
+}

ASP.NET Core/Models/Customer.cs

@@ -0,0 +1,9 @@
+using System;
+
+namespace ASP_NET_Core.Models;
+public class Customer {
+    public int CustomerID { get; set; }
+    public string CustomerName { get; set; }
+    public string Address { get; set; }
+    public string Phone { get; set; }
+}

ASP.NET Core/Models/CustomersData.cs

@@ -0,0 +1,22 @@
+using System.Collections.Generic;
+
+namespace ASP_NET_Core.Models;
+public static class CustomersData {
+    public static List<Customer> Customers = new List<Customer> {
+        new Customer { CustomerID = 1, CustomerName = "Kaela Phonix", Address = "Markušica", Phone = "+385 674 958 1641" },
+        new Customer { CustomerID = 2, CustomerName = "Dotty Hearnden", Address = "Itaberaí", Phone = "+55 491 329 4084" },
+        new Customer { CustomerID = 3, CustomerName = "Alasdair Greenin", Address = "Volgograd", Phone = "+7 657 495 7659" },
+        new Customer { CustomerID = 4, CustomerName = "Stoddard Laidlaw", Address = "Shuiyin", Phone = "+86 774 746 9874" },
+        new Customer { CustomerID = 5, CustomerName = "Damiano Gencke", Address = "Baturaden", Phone = "+62 113 149 9397" },
+        new Customer { CustomerID = 6, CustomerName = "Aura Bavidge", Address = "New York City", Phone = "+1 917 528 7751" },
+        new Customer { CustomerID = 7, CustomerName = "Emmanuel Chedgey", Address = "Adolfo Lopez Mateos", Phone = "+52 626 244 6757" },
+        new Customer { CustomerID = 8, CustomerName = "Clerkclaude Pargeter", Address = "Nong Khae", Phone = "+66 326 375 8694" },
+        new Customer { CustomerID = 9, CustomerName = "Onfroi Cinnamond", Address = "Znamenskoye", Phone = "+7 926 141 2517" },
+        new Customer { CustomerID = 10, CustomerName = "Madlin Kopke", Address = "Patpata Segundo", Phone = "+63 428 750 7737" },
+        new Customer { CustomerID = 11, CustomerName = "Mortie Feary", Address = "Fontanka", Phone = "+380 557 509 4191" },
+        new Customer { CustomerID = 12, CustomerName = "Colet Haitlie", Address = "Novosil'", Phone = "+7 493 632 2768" },
+        new Customer { CustomerID = 13, CustomerName = "Pippy Carnell", Address = "Ubinskoye", Phone = "+7 954 353 8930" },
+        new Customer { CustomerID = 14, CustomerName = "Arvie Midden", Address = "Protvino", Phone = "+7 386 362 2407" },
+        new Customer { CustomerID = 15, CustomerName = "Brook Kamena", Address = "Santa Fé do Sul", Phone = "+55 867 691 7097" }
+    };
+}

ASP.NET Core/Models/Employee.cs

@@ -0,0 +1,9 @@
+using System;
+
+namespace ASP_NET_Core.Models;
+public class Employee {
+    public int ID { get; set; }
+    public int CustomerID { get; set; }
+    public string Address { get; set; }
+    public string Phone { get; set; }
+}

ASP.NET Core/Models/EmployeesData.cs

@@ -0,0 +1,22 @@
+using System.Collections.Generic;
+
+namespace ASP_NET_Core.Models;
+public static class EmployeesData {
+    public static List<Employee> Employees = new List<Employee> {
+        new Employee { ID = 1, CustomerID = 1, Address = "Markušica", Phone = "+385 674 958 1641" },
+        new Employee { ID = 2, CustomerID = 2, Address = "Itaberaí", Phone = "+55 491 329 4084" },
+        new Employee { ID = 3, CustomerID = 3, Address = "Volgograd", Phone = "+7 745 619 7799" },
+        new Employee { ID = 4, CustomerID = 4, Address = "Shuiyin", Phone = "+86 774 746 9874" },
+        new Employee { ID = 5, CustomerID = 5, Address = "Baturaden", Phone = "+62 113 149 9397" },
+        new Employee { ID = 6, CustomerID = 6, Address = "New York City", Phone = "+1 917 528 7751" },
+        new Employee { ID = 7, CustomerID = 7, Address = "Adolfo Lopez Mateos", Phone = "+52 626 244 6757" },
+        new Employee { ID = 8, CustomerID = 8, Address = "Nong Khae", Phone = "+66 326 375 8694" },
+        new Employee { ID = 9, CustomerID = 9, Address = "Znamenskoye", Phone = "+7 926 141 2517" },
+        new Employee { ID = 10, CustomerID = 10, Address = "Patpata Segundo", Phone = "+63 428 750 7737" },
+        new Employee { ID = 11, CustomerID = 11, Address = "Fontanka", Phone = "+380 557 509 4191" },
+        new Employee { ID = 12, CustomerID = 12, Address = "Novosil'", Phone = "+7 493 632 2768" },
+        new Employee { ID = 13, CustomerID = 13, Address = "Ubinskoye", Phone = "+7 954 353 8930" },
+        new Employee { ID = 14, CustomerID = 14, Address = "Protvino", Phone = "+7 386 362 2407" },
+        new Employee { ID = 15, CustomerID = 15, Address = "Santa Fé do Sul", Phone = "+55 867 691 7097" }
+    };
+}