Added list box grouping sample

App.razor

@@ -0,0 +1,10 @@
+<Router AppAssembly="@typeof(Program).Assembly">
+    <Found Context="routeData">
+        <RouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)" />
+    </Found>
+    <NotFound>
+        <LayoutView Layout="@typeof(MainLayout)">
+            <p>Sorry, there's nothing at this address.</p>
+        </LayoutView>
+    </NotFound>
+</Router>

Blazor Sample.csproj

@@ -0,0 +1,16 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.1</TargetFramework>
+    <RazorLangVersion>3.0</RazorLangVersion>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="3.2.1" />
+    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.Build" Version="3.2.1" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="3.2.1" PrivateAssets="all" />
+    <PackageReference Include="Syncfusion.Blazor.DropDowns" Version="19.3.0.44" />
+    <PackageReference Include="System.Net.Http.Json" Version="3.2.0" />
+  </ItemGroup>
+
+</Project>

Pages/Counter.razor

@@ -0,0 +1,16 @@
+@page "/counter"
+
+<h1>Counter</h1>
+
+<p>Current count: @currentCount</p>
+
+<button class="btn btn-primary" @onclick="IncrementCount">Click me</button>
+
+@code {
+    private int currentCount = 0;
+
+    private void IncrementCount()
+    {
+        currentCount++;
+    }
+}

Pages/FetchData.razor

@@ -0,0 +1,55 @@
+@page "/fetchdata"
+@inject HttpClient Http
+
+<h1>Weather forecast</h1>
+
+<p>This component demonstrates fetching data from the server.</p>
+
+@if (forecasts == null)
+{
+    <p><em>Loading...</em></p>
+}
+else
+{
+    <table class="table">
+        <thead>
+            <tr>
+                <th>Date</th>
+                <th>Temp. (C)</th>
+                <th>Temp. (F)</th>
+                <th>Summary</th>
+            </tr>
+        </thead>
+        <tbody>
+            @foreach (var forecast in forecasts)
+            {
+                <tr>
+                    <td>@forecast.Date.ToShortDateString()</td>
+                    <td>@forecast.TemperatureC</td>
+                    <td>@forecast.TemperatureF</td>
+                    <td>@forecast.Summary</td>
+                </tr>
+            }
+        </tbody>
+    </table>
+}
+
+@code {
+    private WeatherForecast[] forecasts;
+
+    protected override async Task OnInitializedAsync()
+    {
+        forecasts = await Http.GetFromJsonAsync<WeatherForecast[]>("sample-data/weather.json");
+    }
+
+    public class WeatherForecast
+    {
+        public DateTime Date { get; set; }
+
+        public int TemperatureC { get; set; }
+
+        public string Summary { get; set; }
+
+        public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
+    }
+}

Pages/Index.razor

@@ -0,0 +1,59 @@
+@page "/"
+
+    <div class="listbox1">
+    <SfListBox TValue="string[]" TItem="ListBoxDataModel" DataSource="@ListBoxData" Scope="@scope" 
+               AllowDragAndDrop="true">
+        <ListBoxFieldSettings Value="Id" Text="Vegetable" GroupBy="Category"></ListBoxFieldSettings>
+    </SfListBox>
+    </div>
+    <div class="listbox2">
+        <SfListBox TValue="string[]" TItem="ListBoxDataModel" DataSource="@ListBoxData1" Scope="@scope"
+                   AllowDragAndDrop="true">
+            <ListBoxFieldSettings Value="Id" Text="Vegetable" GroupBy="Category"></ListBoxFieldSettings>
+        </SfListBox>
+    </div>
+
+@code {
+    private readonly string scope = "combined-list";
+
+    public class ListBoxDataModel
+    {
+        public string Id { get; set; }
+        public string Vegetable { get; set; }
+        public string Category { get; set; }
+    }
+
+    List<ListBoxDataModel> ListBoxData = new List<ListBoxDataModel>()
+    {
+        new ListBoxDataModel() {  Id = "item1", Vegetable = "Cabbage", Category = "Leafy and Salad" },
+        new ListBoxDataModel() {  Id = "item2", Vegetable = "Chickpea", Category = "Beans" },
+        new ListBoxDataModel() {  Id = "item3", Vegetable = "Garlic", Category = "Bulb and Stem" },
+        new ListBoxDataModel() {  Id = "item4", Vegetable = "Green bean", Category = "Beans" },
+        new ListBoxDataModel() {  Id = "item5", Vegetable = "Onion", Category = "Bulb and Stem" },
+        new ListBoxDataModel() {  Id = "item6", Vegetable = "Pumpkins", Category = "Leafy and Salad" },
+
+    };
+    List<ListBoxDataModel> ListBoxData1 = new List<ListBoxDataModel>()
+    {
+        new ListBoxDataModel() {  Id = "item1", Vegetable = "Spinach", Category = "Leafy and Salad" },
+        new ListBoxDataModel() {  Id = "item2", Vegetable = "Horse gram", Category = "Beans" },
+        new ListBoxDataModel() {  Id = "item3", Vegetable = "Nopal", Category = "Bulb and Stem" },
+        new ListBoxDataModel() {  Id = "item4", Vegetable = "Soybeans", Category = "Beans" },
+        new ListBoxDataModel() {  Id = "item5", Vegetable = "Cardoon", Category = "Bulb and Stem" },
+        new ListBoxDataModel() {  Id = "item6", Vegetable = "Yarrow", Category = "Leafy and Salad" },
+
+    };
+
+}
+
+<style>
+    .listbox1 {
+        width: 48%;
+        float: left;
+    }
+
+    .listbox2 {
+        width: 48%;
+        float: right;
+    }
+</style>

Program.cs

@@ -0,0 +1,29 @@
+using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Text;
+using System.Threading.Tasks;
+using Syncfusion.Blazor;
+
+namespace Blazor_Sample
+{
+    public class Program
+    {
+        public static async Task Main(string[] args)
+        {
+            Syncfusion.Licensing.SyncfusionLicenseProvider.RegisterLicense("NTI4NjA2QDMxMzkyZTMzMmUzMEJtOVJ1MXlUM3U4bTNzdGM1N3JnU1hKZXBNV01WNDUxYi9ERVhXNlJXVzQ9");
+            var builder = WebAssemblyHostBuilder.CreateDefault(args);
+            builder.RootComponents.Add<App>("app");
+
+            builder.Services.AddScoped(sp => new HttpClient { BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) });
+
+            builder.Services.AddSyncfusionBlazor();
+
+            await builder.Build().RunAsync();
+        }
+    }
+}

Properties/launchSettings.json

@@ -0,0 +1,29 @@
+{
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:24021",
+      "sslPort": 44335
+    }
+  },
+  "profiles": {
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "inspectUri": "{wsProtocol}://{url.hostname}:{url.port}/_framework/debug/ws-proxy?browser={browserInspectUri}",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "Blazor Sample": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "inspectUri": "{wsProtocol}://{url.hostname}:{url.port}/_framework/debug/ws-proxy?browser={browserInspectUri}",
+      "applicationUrl": "https://localhost:5001;http://localhost:5000",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

README.md

@@ -1,2 +1,20 @@
-# group-blazor-listbox-items
+# How to Group the Blazor ListBox Items
+
 A quick start Blazor project that shows how to group the Blazor ListBox items. This project also includes a code snippet to drag and drop the items between one or more list boxes.
+
+Examples: https://blazor.syncfusion.com/demos/listbox/drag-and-drop
+
+Documentation: 
+
+https://blazor.syncfusion.com/documentation/listbox/sorting-grouping
+
+https://blazor.syncfusion.com/documentation/listbox/drag-and-drop
+
+
+## Project pre-requisites
+Make sure that you have the compatible versions of Visual Studio 2019 and .NET Core SDK latest version(3.1.2) in your machine before starting to work on this project.
+
+## How to run this application?
+To run this application, you need to first clone the group-blazor-listbox-items repository and then open it in Visual Studio 2019. Now, simply build and run your project to view the output.
+
+

Shared/MainLayout.razor

@@ -0,0 +1,15 @@
+@inherits LayoutComponentBase
+
+<div class="sidebar">
+    <NavMenu />
+</div>
+
+<div class="main">
+    <div class="top-row px-4">
+        <a href="http://blazor.net" target="_blank" class="ml-md-auto">About</a>
+    </div>
+
+    <div class="content px-4">
+        @Body
+    </div>
+</div>

Shared/NavMenu.razor

@@ -0,0 +1,37 @@
+<div class="top-row pl-4 navbar navbar-dark">
+    <a class="navbar-brand" href="">Blazor Sample</a>
+    <button class="navbar-toggler" @onclick="ToggleNavMenu">
+        <span class="navbar-toggler-icon"></span>
+    </button>
+</div>
+
+<div class="@NavMenuCssClass" @onclick="ToggleNavMenu">
+    <ul class="nav flex-column">
+        <li class="nav-item px-3">
+            <NavLink class="nav-link" href="" Match="NavLinkMatch.All">
+                <span class="oi oi-home" aria-hidden="true"></span> Home
+            </NavLink>
+        </li>
+        <li class="nav-item px-3">
+            <NavLink class="nav-link" href="counter">
+                <span class="oi oi-plus" aria-hidden="true"></span> Counter
+            </NavLink>
+        </li>
+        <li class="nav-item px-3">
+            <NavLink class="nav-link" href="fetchdata">
+                <span class="oi oi-list-rich" aria-hidden="true"></span> Fetch data
+            </NavLink>
+        </li>
+    </ul>
+</div>
+
+@code {
+    private bool collapseNavMenu = true;
+
+    private string NavMenuCssClass => collapseNavMenu ? "collapse" : null;
+
+    private void ToggleNavMenu()
+    {
+        collapseNavMenu = !collapseNavMenu;
+    }
+}

Shared/SurveyPrompt.razor

@@ -0,0 +1,16 @@
+<div class="alert alert-secondary mt-4" role="alert">
+    <span class="oi oi-pencil mr-2" aria-hidden="true"></span>
+    <strong>@Title</strong>
+
+    <span class="text-nowrap">
+        Please take our
+        <a target="_blank" class="font-weight-bold" href="https://go.microsoft.com/fwlink/?linkid=2127996">brief survey</a>
+    </span>
+    and tell us what you think.
+</div>
+
+@code {
+    // Demonstrates how a parent component can supply parameters
+    [Parameter]
+    public string Title { get; set; }
+}

_Imports.razor

@@ -0,0 +1,11 @@
+@using System.Net.Http
+@using System.Net.Http.Json
+@using Microsoft.AspNetCore.Components.Forms
+@using Microsoft.AspNetCore.Components.Routing
+@using Microsoft.AspNetCore.Components.Web
+@using Microsoft.AspNetCore.Components.WebAssembly.Http
+@using Microsoft.JSInterop
+@using Blazor_Sample
+@using Blazor_Sample.Shared
+@using Syncfusion.Blazor.DropDowns
+@using Syncfusion.Blazor.Data