Fix paginatore sul cambio pagina

MP.Stats/Components/DataPager.razor

@@ -10,7 +10,7 @@
                                 <span aria-hidden="true">«</span>
                             </PaginationLink>
                         </PaginationItem>
-                        @for (int i = 1; i <= LastPage; ++i)
+                        @for (int i = @startPage; i <= endPage; ++i)
                         {
                             var pageNum = i;
                             <PaginationItem Active="@(currPage.Equals(pageNum))">
@@ -57,6 +57,28 @@
         reportChangePage();
     }
 
+    private int numPages { get; set; } = 10;
+
+    // calcola un set 1..numPOages centrato sulla pagina corrente...
+    private int startPage
+    {
+        get
+        {
+            int answ = (int)(currPage / numPages) * numPages - 2;
+            answ = answ > 0 ? answ : 1;
+            return answ;
+        }
+    }
+    private int endPage
+    {
+        get
+        {
+            int answ = (int)(currPage / numPages) * numPages + numPages + 2;
+            answ = answ < LastPage ? answ : LastPage;
+            return answ;
+        }
+    }
+
     private int LastPage
     {
         get