1
當我第一次將投標分配給Label的構造函數時,Label正確綁定並根據CurrentMarket類的當前ComponentData值顯示正確的信息。但是,當ComponentData更改時,OnPropertyChanged事件觸發正常,但ProperyChanged處理程序始終爲NULL。有人可以好好建議我做錯了什麼?PropertyChanged事件處理程序始終爲空
我有一個標籤,我這樣設置綁定:
public StyledLabel(string Property, int i)
{
Binding BindingText = new System.Windows.Data.Binding(Property);
BindingText.Source = Statics.CurrentMarket.ComponentData;
BindingText.Converter = new TextConverter();
this.SetBinding(Label.ContentProperty, BindingText);
}
當前市場類看起來是這樣的:
public class CurrentMarket : INotifyPropertyChanged
{
string sMarket = "";
ComponentData cComponentData;
public string Market
{
set
{
sMarket = value;
OnPropertyChanged("Market");
ComponentData = SharedBoxAdmin.Components[sMarket];
}
get
{
return sMarket;
}
}
public ComponentData ComponentData
{
get { return cComponentData; }
set
{
cComponentData = value;
OnPropertyChanged("ComponentData");
}
}
public CurrentMarket()
{
}
public event PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged(string info)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(info));
}
}
}
謝謝!