添加项目文件。
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410
MonitorModule/ViewModels/RecordViewModel.cs
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410
MonitorModule/ViewModels/RecordViewModel.cs
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using Common.Attributes;
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using DeviceCommand.Base;
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using Logger;
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using Model.Entity;
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using ORM;
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using SqlSugar;
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using System.Collections.ObjectModel;
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using System.Data;
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using System.IO;
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using System.Reflection;
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using System.Text;
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using System.Windows.Input;
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using UIShare.GlobalVariable;
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using UIShare.PubEvent;
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using UIShare.ViewModelBase;
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namespace MonitorModule.ViewModels
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{
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/// <summary>
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/// 记录界面：查询 MonitorValueEntity 表中的历史监测数据。
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/// 功能：监测项筛选 / 台架筛选 / 日期筛选 / 分页 / 导出 CSV。
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/// 使用 SqlSugarContext.DbContext 全局单例，与写入端共用同一数据库连接。
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/// </summary>
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public class RecordViewModel : NavigateViewModelBase, IRegionMemberLifetime, IDisposable
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{
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#region 属性
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public bool KeepAlive => true;
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public ScopedContext _scopedContext { get; set; }
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public GlobalInfo _globalInfo { get; }
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public string TestStatus
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{
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get => _testStatus;
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set => SetProperty(ref _testStatus, value);
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}
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/// <summary>监测项名称下拉列表</summary>
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public ObservableCollection<string> MonitorNames
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{
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get => _monitorNames;
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set => SetProperty(ref _monitorNames, value);
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}
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/// <summary>选中的监测项（null = 全部）</summary>
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public string? SelectedMonitorName
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{
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get => _selectedMonitorName;
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set => SetProperty(ref _selectedMonitorName, value);
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}
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/// <summary>台架（作用域）下拉列表</summary>
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public ObservableCollection<string> ScopeNames
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{
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get => _scopeNames;
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set => SetProperty(ref _scopeNames, value);
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}
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/// <summary>选中的台架（null = 全部）</summary>
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public string? SelectedScope
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{
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get => _selectedScope;
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set => SetProperty(ref _selectedScope, value);
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}
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/// <summary>查询日期（null = 全部日期）</summary>
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public DateTime? SelectedStartDate
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{
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get => _selectedStartDate;
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set => SetProperty(ref _selectedStartDate, value);
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}
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public DateTime? SelectedEndDate
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{
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get => _selectedEndDate;
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set => SetProperty(ref _selectedEndDate, value);
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}
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public DataTable ResultTable
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{
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get => _resultTable;
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set => SetProperty(ref _resultTable, value);
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}
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public string StatusMessage
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{
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get => _statusMessage;
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set => SetProperty(ref _statusMessage, value);
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}
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public int PageIndex
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{
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get => _pageIndex;
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set => SetProperty(ref _pageIndex, value);
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}
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public int PageSize
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{
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get => _pageSize;
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set
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{
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if (SetProperty(ref _pageSize, value <= 0 ? 50 : value))
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{
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RaisePropertyChanged(nameof(TotalPages));
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PageIndex = 1;
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Query();
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}
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}
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}
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public long TotalCount
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{
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get => _totalCount;
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set
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{
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SetProperty(ref _totalCount, value);
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RaisePropertyChanged(nameof(TotalPages));
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}
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}
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public int TotalPages
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{
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get
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{
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if (PageSize <= 0) return 1;
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var pages = (int)((TotalCount + PageSize - 1) / PageSize);
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return pages <= 0 ? 1 : pages;
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}
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}
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#endregion
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#region 命令
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public ICommand LoadedCommand { get; }
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public ICommand QueryCommand { get; }
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public ICommand ClearFilterCommand { get; }
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public ICommand FirstPageCommand { get; }
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public ICommand PrevPageCommand { get; }
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public ICommand NextPageCommand { get; }
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public ICommand LastPageCommand { get; }
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public ICommand ExportCsvCommand { get; }
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public ICommand RefreshCommand { get; }
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#endregion
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#region 私有字段
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private IScopedProvider _scope;
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private string _testStatus = string.Empty;
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private ObservableCollection<string> _monitorNames = new();
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private string? _selectedMonitorName;
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private ObservableCollection<string> _scopeNames = new(new[] { "全部", "TestCell1", "TestCell2", "TestCell3", "TestCell4", "TestCell5", "TestCell6", "TestCell7", "TestCell8" });
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private string? _selectedScope = "全部";
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private DateTime? _selectedStartDate;
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private DateTime? _selectedEndDate;
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private DataTable _resultTable = new();
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private string _statusMessage = "未连接";
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private int _pageIndex = 1;
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private int _pageSize = 50;
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private long _totalCount;
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private bool IsInitiated = false;
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#endregion
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public RecordViewModel(IContainerExtension container) : base(container)
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{
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_globalInfo = container.Resolve<GlobalInfo>();
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LoadedCommand = new DelegateCommand(LoadFilterOptions);
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QueryCommand = new DelegateCommand(() => { PageIndex = 1; Query(); });
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ClearFilterCommand = new DelegateCommand(ClearFilter);
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FirstPageCommand = new DelegateCommand(() => { if (PageIndex > 1) { PageIndex = 1; Query(); } });
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PrevPageCommand = new DelegateCommand(() => { if (PageIndex > 1) { PageIndex--; Query(); } });
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NextPageCommand = new DelegateCommand(() => { if (PageIndex < TotalPages) { PageIndex++; Query(); } });
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LastPageCommand = new DelegateCommand(() => { if (PageIndex < TotalPages) { PageIndex = TotalPages; Query(); } });
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ExportCsvCommand = new DelegateCommand(ExportCsv);
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RefreshCommand = new DelegateCommand(OnExpand);
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}
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public void Dispose()
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{
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_scope?.Dispose();
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}
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#region 筛选条件加载
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/// <summary>
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/// 加载筛选条件：监测项通过反射发现（与 MonitorViewModel 一致），台架从数据库查询。
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/// </summary>
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private void LoadFilterOptions()
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{
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// 监测项：反射发现当前作用域所有带 [Monitorable] 的设备方法
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DiscoverMonitorNames();
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Query();
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}
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/// <summary>
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/// 反射扫描当前作用域 DeviceManager 中所有带 [Monitorable] 特性的设备方法，
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/// 生成与 MonitorViewModel 完全一致的 DisplayName 列表，填充到下拉框。
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/// 这样即使数据库还没数据，用户也能看到所有可筛选的监测项。
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/// </summary>
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private void DiscoverMonitorNames()
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{
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MonitorNames = new ObservableCollection<string>();
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if (_scope == null) return;
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try
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{
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var deviceManager = _scope.Resolve<DeviceManager>();
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if (deviceManager?.DeviceMap == null || deviceManager.DeviceMap.Count == 0)
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{
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StatusMessage = "当前工位无可用设备";
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return;
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}
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// 构建 设备实例 → 硬件指纹 的反向查找表
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var instanceToFp = new Dictionary<object, string>(ReferenceEqualityComparer.Instance);
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foreach (var poolEntry in _globalInfo.HardwarePool)
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{
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var lazy = poolEntry.Value;
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if (lazy.IsValueCreated && lazy.Value != null)
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instanceToFp[lazy.Value] = poolEntry.Key;
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}
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var names = new List<string>();
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foreach (var kvp in deviceManager.DeviceMap)
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{
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string deviceName = kvp.Key;
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var device = kvp.Value;
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var deviceType = device.GetType();
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// 只列出在硬件指纹池中注册的设备
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if (!instanceToFp.ContainsKey(device))
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continue;
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var methods = deviceType.GetMethods(BindingFlags.Public | BindingFlags.Instance)
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.Where(m =>
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{
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if (m.GetCustomAttribute<MonitorableAttribute>() == null) return false;
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if (m.ReturnType != typeof(Task<string>)) return false;
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var parms = m.GetParameters();
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return parms.Length == 0 ||
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(parms.Length == 1 && parms[0].ParameterType == typeof(CancellationToken));
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});
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foreach (var method in methods)
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{
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var attr = method.GetCustomAttribute<MonitorableAttribute>();
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string displayName = !string.IsNullOrEmpty(attr?.Description)
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? $"{deviceName}.{attr.Description}"
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: $"{deviceName}.{method.Name}";
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names.Add(displayName);
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}
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}
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names.Sort();
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MonitorNames = new ObservableCollection<string>(names);
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}
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catch (Exception ex)
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{
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LoggerHelper.ErrorWithNotify(_globalInfo.CurrentScope, $"反射发现监测项失败：{ex.Message}");
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}
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}
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/// <summary>清除所有筛选条件</summary>
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private void ClearFilter()
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{
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SelectedMonitorName = null;
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SelectedScope = "全部";
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SelectedStartDate = null;
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SelectedEndDate = null;
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PageIndex = 1;
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Query();
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}
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#endregion
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#region 查询
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/// <summary>
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/// 按当前筛选条件分页查询 MonitorValueEntity。
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/// </summary>
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private void Query()
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{
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try
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{
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var db = SqlSugarContext.DbContext;
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// 预计算日期范围，避免在表达式树中访问可空属性
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DateTime? dateStart = SelectedStartDate?.Date;
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DateTime? dateEnd = SelectedEndDate?.Date.AddDays(1);
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var query = db.Queryable<MonitorValueEntity>()
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.WhereIF(!string.IsNullOrEmpty(SelectedMonitorName), x => x.MonitorName == SelectedMonitorName)
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.WhereIF(!string.IsNullOrEmpty(SelectedScope) && SelectedScope != "全部", x => x.Scope == SelectedScope)
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.WhereIF(dateStart.HasValue, x => x.CreateTime >= dateStart && x.CreateTime < dateEnd!.Value)
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.OrderBy(x => x.CreateTime, OrderByType.Desc);
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TotalCount = query.Count();
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// 修正越界
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if (PageIndex > TotalPages) PageIndex = TotalPages;
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if (PageIndex < 1) PageIndex = 1;
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int skip = (PageIndex - 1) * PageSize;
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ResultTable = query
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.Skip(skip)
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.Take(PageSize)
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.ToDataTable();
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StatusMessage = $"共 {TotalCount} 行 第 {PageIndex}/{TotalPages} 页";
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}
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catch (Exception ex)
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{
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LoggerHelper.ErrorWithNotify(TestStatus, $"查询失败：{ex.Message}");
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StatusMessage = $"查询失败：{ex.Message}";
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ResultTable = new DataTable();
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TotalCount = 0;
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}
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}
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#endregion
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#region 导出 CSV
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/// <summary>
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/// 按当前筛选条件导出全部结果到 CSV（不分页）。
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/// </summary>
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private void ExportCsv()
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{
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try
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{
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var db = SqlSugarContext.DbContext;
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DateTime? dateStart = SelectedStartDate?.Date;
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DateTime? dateEnd = SelectedEndDate?.Date.AddDays(1);
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var query = db.Queryable<MonitorValueEntity>()
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.WhereIF(!string.IsNullOrEmpty(SelectedMonitorName), x => x.MonitorName == SelectedMonitorName)
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.WhereIF(!string.IsNullOrEmpty(SelectedScope) && SelectedScope != "全部", x => x.Scope == SelectedScope)
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.WhereIF(dateStart.HasValue, x => x.CreateTime >= dateStart && x.CreateTime < dateEnd!.Value)
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.OrderBy(x => x.CreateTime, OrderByType.Desc);
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var dt = query.ToDataTable();
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if (dt.Rows.Count == 0)
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{
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StatusMessage = "无可导出数据";
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return;
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}
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var dlg = new Microsoft.Win32.SaveFileDialog
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{
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Filter = "CSV 文件 (*.csv)|*.csv|所有文件|*.*",
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FileName = $"MonitorData_{DateTime.Now:yyyyMMdd_HHmmss}.csv",
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Title = "导出监测数据为 CSV"
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};
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if (dlg.ShowDialog() != true) return;
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WriteCsv(dlg.FileName, dt);
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StatusMessage = $"导出完成：{dlg.FileName}（{dt.Rows.Count} 行）";
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LoggerHelper.InfoWithNotify(TestStatus, $"工位 [{TestStatus}] 导出监测数据至 {dlg.FileName}，共 {dt.Rows.Count} 行");
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}
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catch (Exception ex)
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{
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LoggerHelper.ErrorWithNotify(TestStatus, $"导出失败：{ex.Message}");
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StatusMessage = $"导出失败：{ex.Message}";
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}
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}
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private static void WriteCsv(string path, DataTable dt)
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{
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// 写 UTF-8 BOM 让 Excel 直接识别中文
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using var sw = new StreamWriter(path, false, new UTF8Encoding(true));
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// 表头
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sw.WriteLine(string.Join(",", dt.Columns.Cast<DataColumn>().Select(c => Escape(c.ColumnName))));
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// 行
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foreach (DataRow row in dt.Rows)
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{
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sw.WriteLine(string.Join(",", row.ItemArray.Select(v => Escape(v?.ToString() ?? string.Empty))));
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}
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}
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private static string Escape(string field)
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{
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if (field.Contains('"') || field.Contains(',') || field.Contains('\r') || field.Contains('\n'))
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{
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return "\"" + field.Replace("\"", "\"\"") + "\"";
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}
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return field;
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}
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#endregion
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#region 双击展开
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private void OnExpand()
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{
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if (string.IsNullOrEmpty(TestStatus)) return;
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_globalInfo.CurrentScope = TestStatus;
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_eventAggregator.GetEvent<ExpandViewEvent>().Publish(TestStatus);
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}
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#endregion
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#region 重写
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public override void OnNavigatedTo(NavigationContext navigationContext)
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{
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base.OnNavigatedTo(navigationContext);
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if (!IsInitiated && navigationContext.Parameters.ContainsKey("Name"))
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{
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TestStatus = navigationContext.Parameters.GetValue<string>("Name");
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_scope = _globalInfo.ScopeDic[TestStatus];
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_scopedContext = _scope.Resolve<ScopedContext>();
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IsInitiated = true;
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}
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LoadFilterOptions();
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}
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#endregion
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}
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}
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Reference in New Issue
Block a user