连接数据库异常添加紧急开锁功能

DM_Weight/App.xaml.cs

@@ -32,6 +32,7 @@ namespace DM_Weight
     /// </summary>
     public partial class App : PrismApplication
     {
+        public static bool DbConnectionFail { get; set; } = false;
         private readonly ILog logger = LogManager.GetLogger(typeof(App));
         public App()
         {
@@ -58,6 +59,11 @@ namespace DM_Weight
         {
             logger.Error($"发生错误：{e.Exception.Message}");
             e.Handled = true;
+            if (e.Exception.Message.Contains("连接数据库过程中发生错误"))
+            {
+                DbConnectionFail = true;
+                Container.Resolve<MainWindow>();
+            }
         }
 
         void OnUnobservedTaskException(object sender, UnobservedTaskExceptionEventArgs e)
@@ -258,6 +264,9 @@ namespace DM_Weight
 
 
             containerRegistry.RegisterForNavigation<EmptyWindow, EmptyWindowViewModel>();
+            //紧急开锁页面
+            containerRegistry.RegisterForNavigation<EmergencyWindow, EmergencyWindowViewModel>();
+
 
         }
     }

DM_Weight/ViewModels/EmergencyWindowViewModel.cs

@@ -0,0 +1,82 @@
+using DM_Weight.Models;
+using DM_Weight.msg;
+using DM_Weight.Port;
+using DM_Weight.util;
+using log4net;
+using Prism.Commands;
+using Prism.Events;
+using Prism.Mvvm;
+using Prism.Regions;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Threading;
+
+namespace DM_Weight.ViewModels
+{
+    public class EmergencyWindowViewModel : BindableBase
+    {
+        private readonly ILog logger = LogManager.GetLogger(typeof(HomeWindowViewModel));
+        IEventAggregator _eventAggregator;
+        private PortUtil _portUtil;
+        IRegionManager _regionManager;
+        private bool _dbConnectionFail = !App.DbConnectionFail;
+        public bool DBConnectionStatus { get => _dbConnectionFail; set => SetProperty(ref _dbConnectionFail, value); }
+        private int _status;
+
+        public int Status { get => _status; set => SetProperty(ref _status, value); }
+        public EmergencyWindowViewModel(IRegionManager regionManager, PortUtil portUtil, IEventAggregator eventAggregator)
+        {
+            _portUtil = portUtil;
+            _eventAggregator = eventAggregator;
+            _regionManager = regionManager;
+            CheckDBConnect();
+        }
+        public DelegateCommand<string> OpenDrawer
+        {
+            get => new DelegateCommand<string>((DrawerNo) =>
+            {
+                //应急开锁
+                logger.Info($"应急开锁正在打开{DrawerNo}号抽屉");
+                Status = 1;
+                _portUtil.SpeakAsync("正在打开" + DrawerNo + "号抽屉");
+                _portUtil.WindowName = "EmergencyWindow";
+                _portUtil.BoardType = 1;
+                _portUtil.ColNos = new int[] { 1 };
+                _portUtil.DrawerNo = Convert.ToInt32(DrawerNo);
+                Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Normal, () => _portUtil.OpenDrawer());
+
+            }
+            );
+        }
+        public DelegateCommand ReturnLoginDelegate
+        {
+            get => new DelegateCommand(() =>
+            {
+                _regionManager.RequestNavigate("MainRegion", "LoginWindow");
+            });
+        }
+        //间隔1分钟查询数据库连接状态
+        private void CheckDBConnect()
+        {
+            new PromiseUtil<int>().taskAsyncLoop(60000, 0, async (options, next, stop) =>
+            {
+                try
+                {
+                    var userList = SqlSugarHelper.Db.Queryable<UserList>()
+                                        .First(u => u.UserName == "admin");
+                    App.DbConnectionFail = false;
+                    DBConnectionStatus = true;
+                    stop();
+                }
+                catch (Exception ex)
+                {
+                    next();
+                }
+            });
+        }
+    }
+}

DM_Weight/ViewModels/MainWindowViewModel.cs

@@ -78,8 +78,12 @@ namespace DM_Weight.ViewModels
 
                 //_container.RegisterType<object, LoginWindow>("LoginWindow");
                 //_regionManager.RegisterViewWithRegion("MainRegion", "LoginWindow");
-
+                if (App.DbConnectionFail)
-                _regionManager.RequestNavigate("MainRegion", "LoginWindow");
+                {
+                    _regionManager.RequestNavigate("MainRegion", "EmergencyWindow");
+                }
+                else
+                    _regionManager.RequestNavigate("MainRegion", "LoginWindow");
 
             }));
         }

DM_Weight/Views/EmergencyWindow.xaml

@@ -0,0 +1,91 @@
+<UserControl x:Class="DM_Weight.Views.EmergencyWindow"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
+             xmlns:local="clr-namespace:DM_Weight.Views"
+             mc:Ignorable="d"  
+             xmlns:pagination="clr-namespace:DM_Weight.Components.pagination"  
+             xmlns:prism="http://prismlibrary.com/"
+             prism:ViewModelLocator.AutoWireViewModel="True"
+             xmlns:convert="clr-namespace:DM_Weight.Converter"
+             xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes">
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="80"></RowDefinition>
+            <RowDefinition></RowDefinition>
+            <RowDefinition Height="Auto"></RowDefinition>
+        </Grid.RowDefinitions>
+        <Grid Background="#00bcd4">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="Auto" />
+                <ColumnDefinition />
+            </Grid.ColumnDefinitions>
+            <Image Grid.Column="0" Margin="30 0 30 0" HorizontalAlignment="Left" Width="Auto" Height="26"  Source="/Images/logo.png" />
+        </Grid>
+        <Grid Grid.Row="1" Margin="6">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="Auto" />
+                <ColumnDefinition Width="Auto" />
+            </Grid.ColumnDefinitions>
+            <Grid Margin="0" Grid.Column="0" Width="280"  Visibility="{Binding Is8Drawer, Converter={StaticResource BooleanToVisibilityConverter}}">
+                <Grid.Background>
+                    <ImageBrush ImageSource="/Images/box.png" />
+                </Grid.Background>
+                <Grid.RowDefinitions>
+                    <RowDefinition Height="200" />
+                    <RowDefinition />
+                </Grid.RowDefinitions>
+                <Grid Grid.Row="1" Height="470" Margin="0 50 0 0">
+                    <Grid.RowDefinitions>
+                        <RowDefinition />
+                        <RowDefinition />
+                        <RowDefinition />
+                        <RowDefinition />
+                        <RowDefinition />
+                        <RowDefinition />
+                        <RowDefinition />
+                        <RowDefinition />
+                    </Grid.RowDefinitions>
+                    <Grid.Resources>
+                        <Style TargetType="{x:Type Button}" BasedOn="{StaticResource MaterialDesignPaperLightButton}">
+                            <Setter Property="Foreground" Value="#00a0ea" />
+                            <Setter Property="BorderBrush" Value="#00a0ea" />
+                        </Style>
+                    </Grid.Resources>
+                    <Button Grid.Row="0" Width="210" Content="1" Command="{Binding OpenDrawer}" CommandParameter="1" />
+                    <Button Grid.Row="1" Width="210" Content="2" Command="{Binding OpenDrawer}" CommandParameter="2" />
+                    <Button Grid.Row="2" Width="210" Content="3" Command="{Binding OpenDrawer}" CommandParameter="3" />
+                    <Button Grid.Row="3" Width="210" Content="4" Command="{Binding OpenDrawer}" CommandParameter="4" />
+                    <Button Grid.Row="4" Width="210" Content="5" Command="{Binding OpenDrawer}" CommandParameter="5" />
+                    <Button Grid.Row="5" Width="210" Content="6" Command="{Binding OpenDrawer}" CommandParameter="6" />
+                    <Button Grid.Row="6" Width="210" Content="7" Command="{Binding OpenDrawer}" CommandParameter="7" />
+                    <Button Grid.Row="7" Width="210" Content="8" Command="{Binding OpenDrawer}" CommandParameter="8" />
+
+                </Grid>
+            </Grid>
+            <Grid Grid.Column="1">
+                <Grid.RowDefinitions>
+                    <RowDefinition Height="Auto"/>
+                    <RowDefinition Height="Auto"/>
+                </Grid.RowDefinitions>
+                <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
+                    <Button  Margin="0 0 6 0" Content="返回登录" Command="{Binding ReturnLoginDelegate}" CommandParameter="0"
+                    Visibility="{Binding DBConnectionStatus, Converter={StaticResource BooleanToVisibilityConverter}}" Style="{StaticResource MaterialDesignOutlinedLightButton}"/>
+                </StackPanel>
+                <StackPanel HorizontalAlignment="Left" Orientation="Horizontal" Grid.Row="1">
+                    <GroupBox Width="800px"
+                          Header="重要提示"
+                          Style="{StaticResource MaterialDesignGroupBox}"
+                          Margin="16"
+                          materialDesign:ColorZoneAssist.Mode="SecondaryMid">
+                        <TextBlock Foreground="Red" FontWeight="Bold" FontSize="16" Text="数据库连接失败，此页面为紧急开锁页面!!!" />
+                    </GroupBox>
+                </StackPanel>
+                <!--<materialDesign:Snackbar
+            Background="{Binding SnackbarBackground}"
+            MessageQueue="{Binding SnackbarMessageQueue}"/>-->
+            </Grid>
+        </Grid>
+    </Grid>
+</UserControl>

DM_Weight/Views/EmergencyWindow.xaml.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace DM_Weight.Views
+{
+    /// <summary>
+    /// EmergencyWindow.xaml 的交互逻辑
+    /// </summary>
+    public partial class EmergencyWindow : UserControl
+    {
+        public EmergencyWindow()
+        {
+            InitializeComponent();
+        }
+    }
+}