info页面添加下滑刷新

Class/TcpServer.cs

@@ -123,8 +123,8 @@ namespace SunlightAggregationTerminal.Class
                         if (data.TryGetValue("Info", out val) && val != null)//机台信息接受
                         {
                             DataModel.Info_data = JsonSerializer.Deserialize<List<Dictionary<string, object>>>(val.ToString()!)!;
-                            //发送消息
+                            //发送消息                             
-                            WeakReferenceMessenger.Default.Send(new object());
+                            WeakReferenceMessenger.Default.Send(new object());                          
                         }
                         if (data.TryGetValue("Query", out val) && val != null)//查询接受
                         {

InfoPage.xaml

@@ -10,9 +10,8 @@
             <converters:StringToBoolConverter x:Key="StringToBoolConverter" />
         </ResourceDictionary>
     </ContentPage.Resources>
-    <ScrollView>
+    <RefreshView x:Name="myRefreshView_" >
-        <VerticalStackLayout Padding="20" Spacing="20">
+        <CollectionView x:Name="CardCollectionView"                             
-            <CollectionView x:Name="CardCollectionView"                             
                  RemainingItemsThreshold="5">
                 <!-- 保持滚动条 -->
                 <CollectionView.ItemTemplate>
@@ -83,6 +82,5 @@
                     </DataTemplate>
                 </CollectionView.ItemTemplate>
             </CollectionView>
-        </VerticalStackLayout>
+    </RefreshView>
-    </ScrollView>
 </ContentPage>

InfoPage.xaml.cs

@@ -1,5 +1,6 @@
 using CommunityToolkit.Mvvm.Messaging;
 using Microsoft.Maui.Controls;
+using Microsoft.Maui.Controls.PlatformConfiguration.WindowsSpecific;
 using SunlightAggregationTerminal.Class;
 using SunlightAggregationTerminal.Models;
 using System.Collections.ObjectModel;
@@ -12,10 +13,11 @@ public partial class InfoPage : ContentPage
     public static string? _Name, _State, _MachineName, _Machine, _Information, _Model,
         _Type, _ModelA, _ModelB, _ModelC, _ModelD, _ModelE, _ModelF;
 
+
     public InfoPage()
     {
         InitializeComponent();
-
+               
         CardCollectionView.ItemsSource = InfoItems;
         // 注册订阅一个不携带数据的消息（使用 object 作为泛型）
         WeakReferenceMessenger.Default.Register<object>(this, (r, m) =>
@@ -23,6 +25,10 @@ public partial class InfoPage : ContentPage
             // 收到信号，直接触发函数
             HandleUITrigger();
         });
+        //注册当前页面的下滑刷新
+        myRefreshView_.Refreshing += (sender, e) => {
+            TcpServer.TcpTransmit("{\"Command\":\"Info\"}");
+            myRefreshView_.IsRefreshing = false; };
     }
     private void HandleUITrigger()
     {
@@ -61,24 +67,8 @@ public partial class InfoPage : ContentPage
             });
 
         }
-
+        CardCollectionView.ItemsSource = InfoItems;
-        InfoItems.Add(new InfoItem
+        myRefreshView_.IsRefreshing = false;
-        {
-            Name = _Name,
-            State = _State,
-            MachineName = _MachineName,
-            Machine = _Machine,
-            Information = _Information,
-            Type = _Type,
-            Model = _Model,
-            ModelA = _ModelA,
-            ModelB = _ModelB,
-            ModelC = _ModelC,
-            ModelD = _ModelD,
-            ModelE = _ModelE,
-            ModelF = _ModelF
-        });
-
     }
 
     ~InfoPage()//关闭时注销消息