“级联"绑定到ObservableCollection，包含其他ObservableCollection

我有一个项目，我需要在其中显示合同清单(Affaire类). 每个合同都有一个阶段列表(Class Phase). 我使用绑定将它们分别显示在2个不同的ListView中. 问题是，当我从ListView中删除一个Phase时，也没有在ListView所在的位置显示Phases时，也没有更新我的ObjectCollection时.

I have a project where I need to display a list of contract (Class Affaire). Each contract has a list of phases (Class Phase). I display each of them in 2 different ListView using binding. Problem is when I remove a Phase from ListView, nor the ListView where are displayed Phases, nor my ObjectCollection are updated.

我用两个不同的ObservableCollection创建了一个上下文:

I created a context with two distinct ObservableCollection :

ObservableCollection，其中是Affaire的列表. ObservableCollection是所选Affaire中存在的阶段的列表

ObservableCollection, where is the list of Affaire. ObservableCollection that are list of phases present in selected Affaire

我的上下文如下:

public class Contexte : INotifyPropertyChanged
    {
        private Affaire selectedAffaire;
        private Phase selectedPhase;
        private Assemblage selectedAssemblage;
        public Affaire SelectedAffaire
        {
            get { return selectedAffaire; }
            set
            {
                selectedAffaire = value;
                this.NotifyPropertyChanged("SelectedAffaire");
            }
        }
        public Phase SelectedPhase
        {
            get { return selectedPhase; }
            set
            {
                selectedPhase = value;
                this.NotifyPropertyChanged("SelectedPhase");
            }
        }
        public Assemblage SelectedAssemblage
        {
            get { return selectedAssemblage; }
            set
            {
                selectedAssemblage = value;
                this.NotifyPropertyChanged("SelectedAssemblage");
            }
        }
        private ObservableCollection<Affaire> listeDesAffaires;
        public ObservableCollection<Affaire> ListeDesAffaires
        {
            get { return listeDesAffaires; }
            set { NotifyPropertyChanged(ref listeDesAffaires, value); }
        }
        /**************************************************/

        public event PropertyChangedEventHandler PropertyChanged;

        public void NotifyPropertyChanged(string nomPropriete)
        {
            if (PropertyChanged != null)
                PropertyChanged(this, new PropertyChangedEventArgs(nomPropriete));
        }

        private bool NotifyPropertyChanged<T>(ref T variable, T valeur, [CallerMemberName] string nomPropriete = null)
        {
            if (object.Equals(variable, valeur)) return false;

            variable = valeur;
            NotifyPropertyChanged(nomPropriete);
            return true;
        }

    }

我的班级事务:

public class Affaire : INotifyPropertyChanged
    {
        public long ID { get; set; }
        private string nom;
        public string Nom
        {
            get { return this.nom; }
            set
            {
                if (this.nom != value)
                {
                    this.nom = value;
                    this.NotifyPropertyChanged("Nom");
                }
            }
        }
        private string code;
        public string Code
        {
            get { return this.code; }
            set
            {
                if (this.code != value)
                {
                    this.code = value;
                    this.NotifyPropertyChanged("Code");
                }
            }
        }
        private string comm;
        public string Comm
        {
            get { return this.comm; }
            set
            {
                if (this.comm != value)
                {
                    this.comm = value;
                    this.NotifyPropertyChanged("Comm");
                }
            }
        }
        private ObservableCollection<Phase> listPhases;
        public ObservableCollection<Phase> ListPhases {
            get { return listPhases; }
            set
            {
                listPhases = value;
                if (PropertyChanged != null)
                {
                    NotifyPropertyChanged("ListPhases");
                }
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;

        public void NotifyPropertyChanged(string propName)
        {
            if (this.PropertyChanged != null)
                this.PropertyChanged(this, new PropertyChangedEventArgs(propName));
        }
    ....
    }

我的课堂阶段:

public class Phase : INotifyPropertyChanged
    {
        private string nomPhase;
        public string NomPhase
        {
            get { return this.nomPhase; }
            set
            {
                if (this.nomPhase != value)
                {
                    this.nomPhase = value;
                    this.NotifyPropertyChanged("NomPhase");
                }
            }
        }
        private int priorite;
        public int Priorite
        {
            get { return this.priorite; }
            set
            {
                if (this.priorite != value)
                {
                    this.priorite = value;
                    this.NotifyPropertyChanged("Priorite");
                }
            }
        }
        private string commPhase;
        public string CommPhase
        {
            get { return this.commPhase; }
            set
            {
                if (this.commPhase != value)
                {
                    this.commPhase = value;
                    this.NotifyPropertyChanged("CommPhase");
                }
            }
        }
        public event PropertyChangedEventHandler PropertyChanged;

        public void NotifyPropertyChanged(string propName)
        {
            if (this.PropertyChanged != null)
                this.PropertyChanged(this, new PropertyChangedEventArgs(propName));
        }
        public long IdAffaire { get; set; }
        public long ID { get; set; }
        private ObservableCollection<Assemblage> listAssemblages;
        public ObservableCollection<Assemblage> ListAssemblages
        {
            get { return listAssemblages; }
            set
            {
                listAssemblages = value;
                if (PropertyChanged != null)
                {
                    NotifyPropertyChanged("ListAssemblages");
                }
            }
        }
    ...
    }

1)当我双击合同(在ListView1中)时，我在ListView2中显示其阶段列表，我将执行以下操作:

1) When I doubleclick on a contract(in ListView1), I display in ListView2 list of its phases, I do the following :

contexte.SelectedAffaire = (Affaire)ListView1.SelectedItem;
contexte.SelectedAffaire.getListPhases();
afficherListview("2");

2)当我编辑阶段时，所有视图在我的视图以及ObservableCollection中都正确更新了

2) When I edit my Phase, all is updated correctly in my view, and also in my ObservableCollection

3)对于添加/删除新的阶段，所有步骤都已解决.

3) For adding/removing a new Phase, all is solved.

Netstep给出的示例可以很好地工作，但是我仍然遇到一个问题:

Example given by Netstep works perfectly but I still meet an issue :

我有一个第三级"Assembly"，这是"Phase"类中的一个ObservableCollection，使用四个ListView导航时没有问题，但是当我想做其他事情时遇到了一个问题:当我正确时，单击阶段"的标题，我想在程序集"列表中显示Affaire中包含的所有程序集的列表，而不对阶段"进行过滤. 为此，我执行以下操作:我在三级listview程序集上，右键单击Phase标题，事件如下:

I have a third level "Assembly", this is an ObservableCollection in class "Phase", I have no problem to navigate with the four ListViews, but I meet a problem when I want to make something else : When I right-click on the header of "Phase", I want to display in the list of Assembly, the list of all assemblies contained in Affaire, without filtering on Phase. For this I do the following : I am on the 3rd level listview Assemblies, I make right click on Phase header and event is as following :

Phase ph = new Phase();
                ph.IdAffaire = contexte.SelectedAffaire.ID;
                ph.ListAssemblages = new ObservableCollection<Assemblage>(contexte.SelectedAffaire.getListAssemblages(true));
                contexte.SelectedPhase = ph;

我捣蛋"了一个新的空白阶段，只是将一个ObservableCollection放在里面，然后将ObservableCollection绑定到我的ListView3. 那部分代码很好用...我只是在代码中的某个地方刷新了上下文，却忘了它，确保出价有问题...全部解决了，谢谢

I "shit" a bit making a new empty phase, just to put an ObservableCollection inside and bind the ObservableCollection to my ListView3. Edit : That part of code works good... I just refreshed the context somewhere in my code and forgot about it, sure that there was something wrong in biding... All solved thanks