1、后台属性绑定：
Grid g = new Grid() { Width = 60, Height = 100 };
g.SetValue(Panel.ZIndexProperty, 10);
//Canvas.SetBottom 绑定数据MLength
Binding bind = new Binding("MLength") { Source = this,Mode= BindingMode.TwoWay};
g.SetBinding(Canvas.BottomProperty,bind);
注：MLength为依赖性属性
2、xaml绑定时间（格式）
Text="{Binding JionTime,StringFormat='{}{0:yyyy-MM-dd HH:mm:ss}'}
注：JionTime为DataTime类型
