diff --git a/ASP.NET Core/Controllers/DataGridEmployeesByStateController.cs b/ASP.NET Core/Controllers/DataGridEmployeesByStateController.cs
index d28945d..91c56b2 100644
--- a/ASP.NET Core/Controllers/DataGridEmployeesByStateController.cs	
+++ b/ASP.NET Core/Controllers/DataGridEmployeesByStateController.cs	
@@ -8,7 +8,7 @@
 using ASP_NET_Core.Models;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
-using Newtonsoft.Json;
+using System.Text.Json;
 
 namespace ASP_NET_Core.Controllers
 {
@@ -24,9 +24,8 @@ public object Get(DataSourceLoadOptions loadOptions)
         [HttpPost]
         public IActionResult Post(string values)
         {
-            var newEmployee = new EmployeeByState();
-            JsonConvert.PopulateObject(values, newEmployee);
-
+            var newEmployee = JsonSerializer.Deserialize<EmployeeByState>(values);
+            newEmployee.ID = SampleData.DataGridEmployeesByState.Max(a => a.ID) + 1;
             if (!TryValidateModel(newEmployee))
                 return BadRequest("Failed to insert item");
 
@@ -40,7 +39,7 @@ public IActionResult Put(int key, string values)
         {
             var employee = SampleData.DataGridEmployeesByState.First(a => a.ID == key);
 
-            PopulateModel(JsonConvert.DeserializeObject<EmployeeByState>(values), employee);
+            PopulateModel(JsonSerializer.Deserialize<EmployeeByState>(values), employee);
 
             if (!TryValidateModel(employee))
                 return BadRequest("Failed to update item");
diff --git a/README.md b/README.md
index ab5412b..e78db8b 100644
--- a/README.md
+++ b/README.md
@@ -12,16 +12,22 @@ This example demonstrates how to implement cascading DropDownBoxes. The main ide
 ## Files to Review
 
 - **jQuery**
-    - [index.html](jQuery/index.html)
+    - [index.html](jQuery/src/index.html)
+    - [index.js](jQuery/src/index.js)
 - **Angular**
     - [app.component.html](Angular/src/app/app.component.html)
     - [app.component.ts](Angular/src/app/app.component.ts)
 - **Vue**
-    - [App.vue](Vue/src/App.vue)
+    - [Home.vue](Vue/src//components/HomeContent.vue)
+    - [StateDropDownBoxComponent](Vue/src/components/StateDropDownBoxComponent.vue)
+    - [CityDropDownBoxComponent](Vue/src/components/CityDropDownBoxComponent.vue)
+    - [DropDownSaveBtnComponent](Vue/src/components/DropDownSaveBtnComponent.vue)
 - **React**
-    - [App.js](React/src/App.js)
+    - [App.tsx](React/src/App.tsx)
+    - [DropDownBox.tsx](React/src/components/MultipleDropDownBox.tsx)
+    - [DropDownBoxSaveButton](React/src/components/DropDownBoxSave.tsx)
 - **ASP.Net**    
-    - [Index.cshtml](ASP.NET/DevExtremeAspNetCoreApp1/Views/Home/Index.cshtml)
+    - [Index.cshtml](ASP.NET%20Core/Views/Home/Index.cshtml)
     
 ## Documentation
 
diff --git a/React/src/App.tsx b/React/src/App.tsx
index 199ac78..38bcc6d 100644
--- a/React/src/App.tsx
+++ b/React/src/App.tsx
@@ -4,7 +4,7 @@ import DataGrid, {
 } from 'devextreme-react/data-grid';
 import './App.css';
 import ArrayStore from 'devextreme/data/array_store';
-import { DataSource, type DataSourceOptions } from 'devextreme-react/common/data';
+import { type DataSourceOptions } from 'devextreme-react/common/data';
 import service, { type City, type Employee } from './data';
 import MultipleDropDownBox from './components/MultipleDropDownBox';
 
@@ -47,7 +47,7 @@ function renderMultipleDropDownBox(
   currentValue: number[],
   // eslint-disable-next-line no-unused-vars
   setValue: (value: number[]) => void,
-  dataSource: ArrayStore | DataSource,
+  dataSource: ArrayStore | DataSourceOptions,
 ): JSX.Element {
   return (
     <MultipleDropDownBox
diff --git a/Vue/src/components/HomeContent.vue b/Vue/src/components/HomeContent.vue
index ac16876..6a6cf74 100644
--- a/Vue/src/components/HomeContent.vue
+++ b/Vue/src/components/HomeContent.vue
@@ -111,7 +111,9 @@ const getFilteredCities = (options: { data: Employee, key: number }): {
   };
 };
 
-const cityDataSource = (cellInfo: DxDataGridTypes.ColumnEditCellTemplateData<Employee, number>): DataSource => {
+const cityDataSource = (
+  cellInfo: DxDataGridTypes.ColumnEditCellTemplateData<Employee, number>
+): DataSource => {
   return new DataSource({
     store: new ArrayStore({
       data: cities,