添加项目文件。

Entities/RequestFeatures/MetaData.cs

@@ -0,0 +1,12 @@
+namespace Entities.RequestFeatures
+{
+    public class MetaData
+	{
+		public int CurrentPage { get; set; }
+		public int TotalPages { get; set; }
+		public int PageSize { get; set; }
+		public int TotalCount { get; set; }
+		public bool HasPrevious => CurrentPage > 1;
+		public bool HasNext => CurrentPage < TotalPages;
+	}
+}

Entities/RequestFeatures/ProductParameters.cs

@@ -0,0 +1,22 @@
+namespace Entities.RequestFeatures
+{
+    public class ProductParameters
+	{
+        const int maxPageSize = 50;
+        public int PageNumber { get; set; } = 1;
+        private int _pageSize = 4;
+        public int PageSize
+        {
+            get
+            {
+                return _pageSize;
+            }
+            set
+            {
+                _pageSize = (value > maxPageSize) ? maxPageSize : value;
+            }
+        }
+		public string? SearchTerm { get; set; }
+        public string OrderBy { get; set; } = "name";
+    }
+}