Update DataPager con possibilità specifica PageSizeList

EgwCoreLib.BlazorTest/Data/WeatherForecastService.cs

@@ -9,7 +9,7 @@ namespace EgwCoreLib.BlazorTest.Data
 
         public Task<WeatherForecast[]> GetForecastAsync(DateTime startDate)
         {
-            return Task.FromResult(Enumerable.Range(1, 5).Select(index => new WeatherForecast
+            return Task.FromResult(Enumerable.Range(1, 25).Select(index => new WeatherForecast
             {
                 Date = startDate.AddDays(index),
                 TemperatureC = Random.Shared.Next(-20, 55),

EgwCoreLib.BlazorTest/Pages/FetchData.razor

@@ -36,28 +36,7 @@ else
             }
         </tbody>
     </table>
+    <DataPager PageSize="@numRecord" currPage="@currPage" numRecordChanged="SetNumRec" numPageChanged="SetCurrPage" totalCount="@totalCount" showLoading="@isLoading" PageSizeList="@PageSizeEnab" />
 }
 
-@code {
-    private WeatherForecast[]? forecasts;
 
-    protected override async Task OnInitializedAsync()
-    {
-        await ReloadAllData();
-    }
-
-    protected async Task ReloadAllData()
-    {
-        forecasts = await ForecastService.GetForecastAsync(DateTime.Now);
-    }
-
-    private bool sortAsc = true;
-    private string sortField = "";
-
-    protected async Task SortRequested(Sorter.SortCallBack e)
-    {
-        sortField = e.ParamName;
-        sortAsc = e.IsAscending;
-        await ReloadAllData();
-    }
-}

EgwCoreLib.BlazorTest/Pages/FetchData.razor.cs

@@ -0,0 +1,70 @@
+using EgwCoreLib.BlazorTest.Data;
+using EgwCoreLib.Razor;
+
+namespace EgwCoreLib.BlazorTest.Pages
+{
+    public partial class FetchData
+    {
+        #region Protected Properties
+
+        protected List<int> PageSizeEnab { get; set; } = new List<int>();
+
+        #endregion Protected Properties
+
+        #region Protected Methods
+
+        protected override async Task OnInitializedAsync()
+        {
+            PageSizeEnab = new List<int>()
+            {
+                4,8,12,16,20,24,28,32,36,40
+            };
+            await ReloadAllData();
+        }
+
+        protected async Task ReloadAllData()
+        {
+            var rawData = await ForecastService.GetForecastAsync(DateTime.Now);
+            totalCount = rawData.Count();
+            forecasts = rawData.Skip(numRecord * (currPage - 1)).Take(numRecord).ToList();
+        }
+
+        protected async Task SetCurrPage(int newNum)
+        {
+            currPage = newNum;
+            await ReloadAllData();
+        }
+
+        protected async Task SetNumRec(int newNum)
+        {
+            numRecord = newNum;
+            await ReloadAllData();
+        }
+
+        protected async Task SortRequested(Sorter.SortCallBack e)
+        {
+            sortField = e.ParamName;
+            sortAsc = e.IsAscending;
+            await ReloadAllData();
+        }
+
+        #endregion Protected Methods
+
+        #region Private Fields
+
+        private List<WeatherForecast>? forecasts;
+        private bool sortAsc = true;
+        private string sortField = "";
+
+        #endregion Private Fields
+
+        #region Private Properties
+
+        private int currPage { get; set; } = 1;
+        private bool isLoading { get; set; } = false;
+        private int numRecord { get; set; } = 8;
+        private int totalCount { get; set; } = 0;
+
+        #endregion Private Properties
+    }
+}

EgwCoreLib.Razor/DataPager.razor

@@ -53,11 +53,10 @@
                 {
                     <div class="input-group input-group-sm">
                         <select @bind="@PageSize" class="form-select form-select-sm">
-                            <option value="5">5</option>
-                            <option value="10">10</option>
-                            <option value="25">25</option>
-                            <option value="50">50</option>
-                            <option value="100">100</option>
+                            @foreach (var item in PageSizeList)
+                            {
+                                <option value="@item">@item</option>
+                            }
                         </select>
                     </div>
                 }

EgwCoreLib.Razor/DataPager.razor.cs

@@ -6,6 +6,9 @@ namespace EgwCoreLib.Razor
     {
         #region Public Properties
 
+        /// <summary>
+        /// Num pagina correntemente selezioanta
+        /// </summary>
         [Parameter]
         public int currPage
         {
@@ -24,21 +27,35 @@ namespace EgwCoreLib.Razor
             }
         }
 
+        /// <summary>
+        /// Export (csv) abilitato
+        /// </summary>
         [Parameter]
         public bool exportEnabled { get; set; } = false;
 
+        /// <summary>
+        /// Evento richiesta export
+        /// </summary>
         [Parameter]
         public EventCallback<int> exportRequested { get; set; }
-
+        /// <summary>
+        /// Filename x export
+        /// </summary>
         [Parameter]
         public string fileName { get; set; } = "";
-
+        /// <summary>
+        /// Evento cambio pagina nel paginatore
+        /// </summary>
         [Parameter]
         public EventCallback<int> numPageChanged { get; set; }
-
+        /// <summary>
+        /// PageSize = Num record da mostrare cambiato
+        /// </summary>
         [Parameter]
         public EventCallback<int> numRecordChanged { get; set; }
-
+        /// <summary>
+        /// Attuale PageSize
+        /// </summary>
         [Parameter]
         public int PageSize
         {
@@ -57,6 +74,9 @@ namespace EgwCoreLib.Razor
             }
         }
 
+        /// <summary>
+        /// Fase di loading
+        /// </summary>
         [Parameter]
         public bool showLoading
         {
@@ -78,10 +98,21 @@ namespace EgwCoreLib.Razor
                 _showLoading = value;
             }
         }
-
+        /// <summary>
+        /// Totale record da mostrare
+        /// </summary>
         [Parameter]
         public int totalCount { get; set; } = 0;
 
+        /// <summary>
+        /// Elenco dei PageSize ammessi
+        /// </summary>
+        [Parameter]
+        public List<int> PageSizeList { get; set; } = new List<int>()
+        {
+            5,10,25,50,100
+        };
+
         #endregion Public Properties
 
         #region Public Methods