用戶控件事件不會觸發

Question

我的UserControl中的事件有問題。

<UserControl x:Class="LatikeManager.Views.RoomManager_Item" 
     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:LatikeManager.Views" 
     mc:Ignorable="d" 
     d:DesignHeight="170" d:DesignWidth="220" Width="200" Height="150" Background="Transparent" MouseLeftButtonUp="UserControl_MouseLeftButtonUp"> 

<!--<Border BorderBrush="{Binding BorderColor}" BorderThickness="2" Grid.Row="0" Grid.RowSpan="2" VerticalAlignment="Top">--> 

<Grid Name="gdContent" Width="200" Height="150" Background="Wheat"> 

    <Button Width="30" Height="30"></Button> 

    </Grid> 
<!--</Border>--> 

後面代碼：

public partial class RoomManager_Item : UserControl, INotifyPropertyChanged 
{ 
    public class MyEventArgs : EventArgs 
    { 
     public bool RoomManagerItemEventArgs { get; set; } 

     public MyEventArgs(bool isSelected) 
     { 
      RoomManagerItemEventArgs = isSelected; 
     } 
    } 

    public class OnlineEventArgs : EventArgs 
    { 
     public bool OnlineStateChanged { get; set; } 

     public OnlineEventArgs(bool Connected) 
     { 
      OnlineStateChanged = Connected; 
     } 
    } 

    #region //Events 
    public delegate void MyEventHandler(object sender, MyEventArgs args); 
    public event MyEventHandler RoomManagerItem_SelectedChanged; 

    public delegate void OnlineEventHandler(object sender, OnlineEventArgs args); 
    public event OnlineEventHandler RoomManagerItem_OnlineChanged; 

    public event PropertyChangedEventHandler PropertyChanged; 
    #endregion 

    #region //Images 
    private dynamic unknownStatus = new BitmapImage(new Uri("Resources/Help-48.png", UriKind.Relative)); 
    private dynamic greenStatus = new BitmapImage(new Uri("Resources/Ok-48.png", UriKind.Relative)); 
    private dynamic warningStatus = new BitmapImage(new Uri("Resources/Error-48.png", UriKind.Relative)); 
    private dynamic errorStatus = new BitmapImage(new Uri("Resources/Cancel-48.png", UriKind.Relative)); 

    private dynamic computerOnline = new BitmapImage(new Uri("Resources/Workstation-50(2).png", UriKind.Relative)); 
    private dynamic computerOffline = new BitmapImage(new Uri("Resources/Workstation-50.png", UriKind.Relative)); 

    private dynamic laptopOnline = new BitmapImage(new Uri("Resources/Workstation-50(2).png", UriKind.Relative)); 
    private dynamic laptopOffline = new BitmapImage(new Uri("Resources/Laptop-50.png", UriKind.Relative)); 

    public int wert = 0; 
    #endregion    

    #region 
    private ILatikeClient _ClientRef; 
    public ILatikeClient ClientRef 
    { 
     get { return _ClientRef; } 
     set 
     { 
      _ClientRef = value; 
      if (RoomManagerItem_OnlineChanged != null) 
       RoomManagerItem_OnlineChanged(this, new OnlineEventArgs(IsConnected)); 
     } 
    } 

    public bool IsConnected { get { return ClientRef != null; } } 
    public RegisterInfo Info { get; set; } 
    public List<Program> ProgramInfo { get; set; } 
    public HardwareInfo HardwareInfo { get; set; } 
    public dynamic SSDStateSource { get; set; } 
    public DB.SYSTEM Rechner { get; set; } 
    public dynamic ComputerOnlinePicture { get; set; } 

    private bool _IsSelected; 
    public bool IsSelected 
    { 
     get { return _IsSelected; } 
     set 
     { 
      _IsSelected = value; 
     } 
    } 

public RoomManager_Item(DB.SYSTEM rechner) 
    { 
     Rechner = rechner; 
     InitializeComponent(); 
     DataContext = this; 
    } 

    private void UserControl_MouseLeftButtonUp(object sender, MouseButtonEventArgs e) 
    { 
     if (e.ChangedButton == MouseButton.Left) 
     { 
      IsSelected = !IsSelected; 
     } 
     else 
     { 
      IsSelected = true; 
     } 

     if (RoomManagerItem_SelectedChanged != null) 
     { 
      RoomManagerItem_SelectedChanged(this, new MyEventArgs(IsSelected)); 
     } 
    } 

} 

我不知道爲什麼，這是行不通的，它沒有在任何地方用戶控件火。沒有事件發生，甚至沒有按鈕的點擊事件，按鈕也不會懸停。

在我的代碼是一個調度員，工作正常

new DispatcherTimer(TimeSpan.FromSeconds(10), DispatcherPriority.Normal, 
(s, a) => 
{ 
    RefreshClientInfo(null, null); 
}, 
Dispatcher); 

...但我不能以任何方式，形式互動。

另外的代碼加載UC的到我的網格

private void Room_Changed(object sender, SelectionChangedEventArgs e) 
    { 
     if (ctxROOM.Count != 0) 
      if (cbRooms.SelectedIndex != -1) 
       if (CurrentRoom == "Übersicht") 
       { 
        btnAllNoneEnabled = false; 
        gdDesign.RowDefinitions.Clear(); 
        gdDesign.ColumnDefinitions.Clear(); 
        gdDesign.Children.Clear(); 
        gdContent.Children.Clear();       
        var overviewRoom = ctxROOM.Select(p => p).ToList();//get all rooms 
        //checked any room on content 
        foreach (DB.ROOM item in overviewRoom) 
        { 
         var overviewSystemRoom = ctxSYSTEM_ROOM.Where(p => p.room_name == item.room_name).ToList(); 
         //if the room has Systems, create them 
         foreach (var checkContent in overviewSystemRoom) 
          if (checkContent != null) 
          { 
           gdContent.Children.Add(new RoomManager_RoomOverview(item, overviewSystemRoom, ctxSYSTEM)); 
           break; 
          } 
        } 
       } 
       else 
       { 
        btnAllNoneEnabled = true; 
        gdContent.Children.Clear(); 
        var raum = ctxROOM.Single(p => p.room_name == CurrentRoom); 
        gdDesign.RowDefinitions.Clear(); 
        for (int i = 0; i < raum.room_rows; i++) 
        { 
         gdDesign.RowDefinitions.Add(new RowDefinition() 
         { 
          Height = new GridLength(1, GridUnitType.Star), 
          MinHeight = 152 
         }); 
        } 
        gdDesign.ColumnDefinitions.Clear(); 
        for (int i = 0; i < raum.room_columns; i++) 
        { 
         gdDesign.ColumnDefinitions.Add(new ColumnDefinition() 
         { 
          Width = new GridLength(1, GridUnitType.Star), 
          MinWidth = 202 
         }); 
        } 

        gdDesign.Children.Clear(); 
        for (int r = 0; r < raum.room_rows; r++) 
        { 
         for (int c = 0; c < raum.room_columns; c++) 
         { 
          RoomManager_Item item; 
          var system = ctxSYSTEM_ROOM.SingleOrDefault(p => p.row == r && p.column == c && p.room_name == CurrentRoom); 
          DB.SYSTEM systemVar = new DB.SYSTEM(); 

          if (system != null) 
          { 
           systemVar = ctxSYSTEM.SingleOrDefault(p => p.description == system.system_description); 
           item = new RoomManager_Item(systemVar); 
           item.ContextMenu = ctxMenue; 
           item.RoomManagerItem_SelectedChanged += (s, b) => 
           { 
            //var roomSeats = _Ctx.ROOM.Select(p => p.room_name == CurrentRoom ? p.seats : 0); 
            var selectedSystem = ctxSYSTEM_ROOM.SingleOrDefault(p => p.system_description == systemVar.description); 
            roomItemsSelected[selectedSystem.row, selectedSystem.column] = b.RoomManagerItemEventArgs; 
            if (b.RoomManagerItemEventArgs) count++; 
            else count--; 
            PropertyChanged(this, new PropertyChangedEventArgs("btnAllNone")); 
           }; 
           gdDesign.Children.Add(item); 
           Grid.SetRow(item, r); 
           Grid.SetColumn(item, c); 
          } 
         } 
        }; 
       } 
    } 

這是我得到的UserControls我需要的數量，並將它們添加到我的網格的方法。

Answer 1

這聽起來像是有明顯阻塞或處理鼠標事件的東西。我強烈建議你下載Snoop for WPF，這將允許你詢問UI以查看是否有任何東西超出了你的控制範圍，甚至監視鼠標事件以查看正在處理它們的東西。