* UIPagination：更新了Demo，分页切换事件加载数据。

SunnyUI.Demo/Controls/FDataGridView.cs

@@ -4,6 +4,8 @@ namespace Sunny.UI.Demo
 {
     public partial class FDataGridView : UITitlePage
     {
+        List<Data> datas = new List<Data>();
+
         public FDataGridView()
         {
             InitializeComponent();
@@ -13,14 +15,8 @@ namespace Sunny.UI.Demo
             uiDataGridView1.AddColumn("Column3", "Column3").SetFixedMode(150);
             uiDataGridView1.AddColumn("Column4", "Column4").SetFixedMode(150);
             uiDataGridView1.ReadOnly = true;
-        }
 
-        public override void Init()
+            for (int i = 0; i < 3610; i++)
-        {
-            base.Init();
-
-            List<Data> datas = new List<Data>();
-            for (int i = 0; i < 3650; i++)
             {
                 Data data = new Data();
                 data.Column1 = "Data" + i.ToString("D2");
@@ -30,7 +26,16 @@ namespace Sunny.UI.Demo
                 datas.Add(data);
             }
 
-            uiPagination1.DataSource = datas;
+            //设置分页控件总数
+            uiPagination1.TotalCount = datas.Count;
+
+            //设置分页控件每页数量
+            uiPagination1.PageSize = 50;
+        }
+
+        public override void Init()
+        {
+            base.Init();
             uiPagination1.ActivePage = 1;
         }
 
@@ -50,9 +55,27 @@ namespace Sunny.UI.Demo
             }
         }
 
+        /// <summary>
+        /// 分页控件页面切换事件
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="pagingSource"></param>
+        /// <param name="pageIndex"></param>
+        /// <param name="count"></param>
         private void uiPagination1_PageChanged(object sender, object pagingSource, int pageIndex, int count)
         {
-            uiDataGridView1.DataSource = pagingSource;
+            //未连接数据库，通过模拟数据来实现
+            //一般通过ORM的分页去取数据来填充
+            //pageIndex：第几页，和界面对应，从1开始，取数据可能要用pageIndex - 1
+            //count：单页数据量，也就是PageSize值
+            List<Data> data = new List<Data>();
+            for (int i = (pageIndex - 1) * count; i < (pageIndex - 1) * count + count; i++)
+            {
+                if (i >= datas.Count) continue;
+                data.Add(datas[i]);
+            }
+
+            uiDataGridView1.DataSource = data;
             uiDataGridViewFooter1.Clear();
             uiDataGridViewFooter1["Column1"] = "合计：";
             uiDataGridViewFooter1["Column2"] = "Column2_" + pageIndex;

SunnyUI/Controls/UIPagination.cs

@@ -842,7 +842,7 @@ namespace Sunny.UI
         {
             if (dataSource == null)
             {
-                PageChanged?.Invoke(this, dataSource, activePage, 0);
+                PageChanged?.Invoke(this, dataSource, activePage, PageSize);
                 return;
             }