一、Command类的创建 >> 构造函数方法中传入了一个委托
public class MyCommand : ICommand
{
public readonly Action _action;
public MyCommand(Action action) {
this._action = action;
}
public event EventHandler CanExecuteChanged;
public bool CanExecute(object parameter)
{
return true;
}
public void Execute(object parameter)
{
_action();
}
}
二、command在viewmodel中的使用
public class MainViewModel
{
public MyCommand myCommand { get; set; }
public MainViewModel() {
myCommand = new MyCommand(Show);
}
public void Show()
{
MessageBox.Show("你点击了我！");
}
}
三、在页面控件button 中调用
<Button Command="{Binding myCommand}">点击</Button>