Add a simple setting example.

samples/MicroserviceDemo/applications/PublicWebSite.Host/Pages/Products.cshtml

@@ -1,5 +1,8 @@
 @page
+@using ProductManagement
+@using Volo.Abp.Settings
 @model PublicWebSite.Host.Pages.ProductsModel
+@inject ISettingProvider SettingProvider
 <h1>Our Products</h1>
 <ul>
     @foreach (var product in Model.Products.Items)
@@ -9,4 +12,7 @@
             <i>Stock count: @product.StockCount</i>
         </li>
     }
-</ul>
+</ul>
+
+@* An example to show how to read settings from the client side / UI *@
+<p><i>Maximum allowed page size: @await SettingProvider.GetOrNullAsync(ProductManagementSettings.MaxPageSize)</i></p>

samples/MicroserviceDemo/applications/PublicWebSite.Host/Pages/Products.cshtml.cs

@@ -1,5 +1,4 @@
 using System.Threading.Tasks;
-using MyCompanyName.ProductManagement;
 using ProductManagement;
 using Volo.Abp.Application.Dtos;
 using Volo.Abp.AspNetCore.Mvc.UI.RazorPages;

samples/MicroserviceDemo/modules/product/src/ProductManagement.Application.Contracts/ProductManagement/IPublicProductAppService.cs

@@ -1,9 +1,8 @@
 using System.Threading.Tasks;
-using ProductManagement;
 using Volo.Abp.Application.Dtos;
 using Volo.Abp.Application.Services;
 
-namespace MyCompanyName.ProductManagement
+namespace ProductManagement
 {
     public interface IPublicProductAppService : IApplicationService
     {

samples/MicroserviceDemo/modules/product/src/ProductManagement.Application.Contracts/ProductManagement/ProductManagementApplicationContractsModule.cs

@@ -3,6 +3,7 @@ using Volo.Abp.Application;
 using Volo.Abp.Authorization.Permissions;
 using Volo.Abp.Localization;
 using Volo.Abp.Modularity;
+using Volo.Abp.Settings;
 using Volo.Abp.VirtualFileSystem;
 
 namespace ProductManagement
@@ -31,6 +32,11 @@ namespace ProductManagement
                     .Get<ProductManagementResource>()
                     .AddVirtualJson("/ProductManagement/Localization/ApplicationContracts");
             });
+
+            Configure<SettingOptions>(options =>
+            {
+                options.DefinitionProviders.Add<ProductManagementSettingDefinitionProvider>();
+            });
         }
     }
 }

samples/MicroserviceDemo/modules/product/src/ProductManagement.Application.Contracts/ProductManagement/ProductManagementSettingDefinitionProvider.cs

@@ -0,0 +1,22 @@
+using Volo.Abp.Settings;
+
+namespace ProductManagement
+{
+    /* These setting definitions will be visible to clients that has a ProductManagement.Application.Contracts
+     * reference. Settings those should be hidden from clients should be defined in the ProductManagement.Application
+     * package.
+     */
+    public class ProductManagementSettingDefinitionProvider : SettingDefinitionProvider
+    {
+        public override void Define(ISettingDefinitionContext context)
+        {
+            context.Add(
+                new SettingDefinition(
+                    ProductManagementSettings.MaxPageSize,
+                    "100",
+                    isVisibleToClients: true
+                )
+            );
+        }
+    }
+}

samples/MicroserviceDemo/modules/product/src/ProductManagement.Application.Contracts/ProductManagement/ProductManagementSettings.cs

@@ -0,0 +1,12 @@
+namespace ProductManagement
+{
+    public static class ProductManagementSettings
+    {
+        public const string GroupName = "ProductManagement";
+
+        /// <summary>
+        /// Maximum allowed page size for paged list requests.
+        /// </summary>
+        public const string MaxPageSize = GroupName + ".MaxPageSize";
+    }
+}

samples/MicroserviceDemo/modules/product/src/ProductManagement.Application/ProductManagement/ProductAppService.cs

@@ -2,10 +2,8 @@
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Authorization;
-using ProductManagement;
 using Volo.Abp.Application.Dtos;
 using Volo.Abp.Application.Services;
-using Volo.Abp.Domain.Repositories;
 
 namespace ProductManagement
 {
@@ -23,6 +21,8 @@ namespace ProductManagement
 
         public async Task<PagedResultDto<ProductDto>> GetListPagedAsync(PagedAndSortedResultRequestDto input)
         {
+            await NormalizeMaxResultCountAsync(input);
+
             var products = await _productRepository.GetListAsync(input.Sorting, input.MaxResultCount, input.SkipCount);
 
             var totalCount = await _productRepository.GetCountAsync();
@@ -32,7 +32,7 @@ namespace ProductManagement
             return new PagedResultDto<ProductDto>(totalCount, dtos);
         }
 
-        public async Task<ListResultDto<ProductDto>> GetListAsync()
+        public async Task<ListResultDto<ProductDto>> GetListAsync() //TODO: Why there are two GetList. GetListPagedAsync would be enough (rename it to GetList)!
         {
             var products = await _productRepository.GetListAsync();
 
@@ -73,5 +73,14 @@ namespace ProductManagement
         {
             await _productRepository.DeleteAsync(id);
         }
+
+        private async Task NormalizeMaxResultCountAsync(PagedAndSortedResultRequestDto input)
+        {
+            var maxPageSize = (await SettingProvider.GetOrNullAsync(ProductManagementSettings.MaxPageSize))?.To<int>();
+            if (maxPageSize.HasValue && input.MaxResultCount > maxPageSize.Value)
+            {
+                input.MaxResultCount = maxPageSize.Value;
+            }
+        }
     }
 }

samples/MicroserviceDemo/modules/product/src/ProductManagement.Application/ProductManagement/ProductManagementApplicationModule.cs

@@ -1,6 +1,5 @@
 using Volo.Abp.AutoMapper;
 using Volo.Abp.Modularity;
-using Volo.Abp.Settings;
 
 namespace ProductManagement
 {
@@ -17,11 +16,6 @@ namespace ProductManagement
             {
                 options.AddProfile<ProductManagementApplicationAutoMapperProfile>(validate: true);
             });
-
-            Configure<SettingOptions>(options =>
-            {
-                options.DefinitionProviders.Add<ProductManagementSettingDefinitionProvider>();
-            });
         }
     }
 }

samples/MicroserviceDemo/modules/product/src/ProductManagement.Application/ProductManagement/ProductManagementSettingDefinitionProvider.cs

@@ -1,14 +0,0 @@
-using Volo.Abp.Settings;
-
-namespace ProductManagement
-{
-    public class ProductManagementSettingDefinitionProvider : SettingDefinitionProvider
-    {
-        public override void Define(ISettingDefinitionContext context)
-        {
-            /* Define module settings here.
-             * Use names from ProductManagementSettings class.
-             */
-        }
-    }
-}

samples/MicroserviceDemo/modules/product/src/ProductManagement.Application/ProductManagement/ProductManagementSettings.cs

@@ -1,11 +0,0 @@
-namespace ProductManagement
-{
-    public static class ProductManagementSettings
-    {
-        public const string GroupName = "ProductManagement";
-
-        /* Add constants for setting names. Example:
-         * public const string MySettingName = GroupName + ".MySettingName";
-         */
-    }
-}

samples/MicroserviceDemo/modules/product/src/ProductManagement.Application/ProductManagement/PublicProductAppService.cs

@@ -1,10 +1,9 @@
 using System.Collections.Generic;
 using System.Threading.Tasks;
-using ProductManagement;
 using Volo.Abp.Application.Dtos;
 using Volo.Abp.Application.Services;
 
-namespace MyCompanyName.ProductManagement
+namespace ProductManagement
 {
     public class PublicProductAppService : ApplicationService, IPublicProductAppService
     {