綁定到導航屬性不會刷新UI

Question

我有這個實體（BaseModel實現INotifyPropertyChanged）：

編輯1：的SetProperty代碼：

protected bool SetProperty<T>(ref T storage, T value, [CallerMemberName] String propertyName = null) 
{ 
    if (object.Equals(storage, value)) return false; 
     storage = value; 

    this.OnPropertyChanged(propertyName); 
    return true; 
} 


public partial class Movimientos : BaseModel 
{ 
    public Movimientos() 
    { 
    } 
    private Nullable<int> _intIdBodega; 
    public Nullable<int> IntIdBodega 
    { 
     get { return _intIdBodega; } 
     set { SetProperty(ref _intIdBodega, value); } 
    } 

    public virtual INV_Bodegas INV_Bodegas { get; set; } 

} 

有了這個導航屬性：

/// Nav property 
public partial class INV_Bodegas : BaseModel 
{ 
    public INV_Bodegas() 
    { 
    }  
    private int _intIdBodega; 
    public int IntIdBodega 
    { 
     get { return _intIdBodega; } 
     set { SetProperty(ref _intIdBodega, value); } 
    } 

    private string _strCodigoBodega; 
    public string StrCodigoBodega 
    { 
     get { return _strCodigoBodega; } 
     set { SetProperty(ref _strCodigoBodega, value); } 
    } 
} 

如果用戶更改IntIdBodega屬性在查看模型

public class VieModel 
{ 
    ObservableCollection<Movimientos> mov {get;set;} 

    public VieModel() 
    { 
     mov = new ObservableCollection<Movimientos>(); 
     mov.CollecTionChanged += mov_CollectionChanged; 
    } 

    void mov_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e) 
    { 
     if (e.NewItems != null) 
     { 

      foreach (var item in e.NewItems) 
      { 
       ((Movimientos)item).PropertyChanged += det_PropertyChanged; 
      } 
     } 
    } 

在視圖模型中，我更新導航屬性，但Datagrid從不更新綁定到此屬性的值。

public void det_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e) 
    { 
     Movimientos Idet = (Movimientos)sender; 
     // Here I Update The navigation property. 
     // But DataGrid never refresh the changes 
     if (e.PorpertyName == "IntIdBodega") 
     { 
      Idet.INV_Bodegas = db.INV_Bodegas 
       .Where(x=> x.IntIdbodega == Idet.Intidbodega) 
       .FirstOrDefault(); 
     } 
    } 
} 

這就是我如何綁定。

<DataGridTextColumn Header="{x:Static resources:Labels.Bodega}" 
           Width="0.5*" 
           Binding="{Binding Inv_Bodegas.StrCodigoBodega,UpdateSourceTrigger=PropertyChanged,Mode=TwoWay}" 
           IsReadOnly="True"> 

我的問題是，這列從未刷新如果我IsReadOnly爲false變化，這些變化可反映只有當我在此列按F2。

我的問題是：

如何強制用戶界面刷新此導航屬性？

Answer 1

您已經實現了該接口，但從未提出該事件。嘗試：

public string StrCodigoBodega 
{ 
    get { return _strCodigoBodega; } 
    set { 
     SetProperty(ref _strCodigoBodega, value); 
     this.PropertyChanged(this, new PropertyChangedEventArgs("StrCodigoBodega")); 
    } 
} 

見例如：

https://msdn.microsoft.com/en-us/library/system.componentmodel.inotifypropertychanged.propertychanged%28v=vs.100%29.aspx