标签:hand this handler str ring null nta public prot
后台通知:
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
标签:hand this handler str ring null nta public prot
原文地址:https://www.cnblogs.com/LCLBook/p/11316962.html