Synchronize the Net40

Net40/HandyControlDemo_Net40/ViewModel/Controls/PaginationDemoViewModel.cs

@@ -0,0 +1,68 @@
+using System.Collections.Generic;
+using System.Linq;
+using GalaSoft.MvvmLight;
+using GalaSoft.MvvmLight.Command;
+using HandyControl.Data;
+using HandyControlDemo.Data;
+using HandyControlDemo.Service;
+
+namespace HandyControlDemo.ViewModel
+{
+    public class PaginationDemoViewModel : ViewModelBase
+    {
+        /// <summary>
+        ///     所有数据
+        /// </summary>
+        private readonly List<DemoDataModel> _totalDataList;
+
+        /// <summary>
+        ///     显示的数据
+        /// </summary>
+        private List<DemoDataModel> _dataList;
+
+        /// <summary>
+        ///     显示的数据
+        /// </summary>
+        public List<DemoDataModel> DataList
+        {
+            get => _dataList;
+            set => Set(nameof(DataList), ref _dataList, value);
+        }
+
+        /// <summary>
+        ///     页码
+        /// </summary>
+        private int _pageIndex = 1;
+
+        /// <summary>
+        ///     页码
+        /// </summary>
+        public int PageIndex
+        {
+            get => _pageIndex;
+            set => Set(nameof(PageIndex), ref _pageIndex, value);
+        }
+
+        public PaginationDemoViewModel(DataService dataService)
+        {
+            _totalDataList = dataService.GetDemoDataList(100);
+            DataList = _totalDataList.Take(10).ToList();
+        }
+
+        private RelayCommand<FunctionEventArgs<int>> _pageUpdatedCmd;
+
+        /// <summary>
+        ///     页码改变命令
+        /// </summary>
+        public RelayCommand<FunctionEventArgs<int>> PageUpdatedCmd =>
+            _pageUpdatedCmd ?? (_pageUpdatedCmd = new RelayCommand<FunctionEventArgs<int>>(PageUpdated));
+
+        /// <summary>
+        ///     页码改变
+        /// </summary>
+        private void PageUpdated(FunctionEventArgs<int> info)
+        {
+            DataList = _totalDataList.Skip((info.Info - 1) * 10).Take(10).ToList();
+        }
+    }
+}