我有一个userControl的属性,如下所示:
public enum Mode { Full, Simple }
public Mode NavigatorMode { get; set; }
现在,当用户将属性(NavigatorMode)从完全模式更改为简单模式或反向时,我需要编写一个事件
我该怎么做?
答案 0 :(得分:1)
将INotifyPropertyChanged实施到您的班级:
public class YourClass : INotifyPropertyChanged
{
// Your private variable
private Mode mode;
// Declare the event
public event PropertyChangedEventHandler PropertyChanged;
public YourClass()
{
}
public Mode NavigatorMode
{
get { return mode; }
set
{
mode = value;
// Call OnPropertyChanged whenever the property is updated
OnPropertyChanged(mode);
}
}
// Create the OnPropertyChanged method to raise the event
protected void OnPropertyChanged(Mode modeParam)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(modeParam));
}
}
}
答案 1 :(得分:0)
如何在控件中实现INotifyPropertyChanged接口?
或者只是编写自定义事件:
public event EventHandler<Mode> ModeChanged;
public Mode NavigatorMode
{
get { return _navigatorMode; }
set
{
_navigatorMode = value;
if(ModeChanged != null)
ModeChanged(this, _navigatorMode);
}
}
在用户控件之外,您可以处理该事件并根据模式执行某些操作。