使用GetValue和SetValue来设置属性

public yufa2()

{

InitializeComponent();//利用GetValue和SetValue

double left = 400;

double top = 30;

double radius = 10;

string width;

string height;

//设置矩形的位置

rect_MyRectangle.SetValue(Canvas.LeftProperty, left);

rect_MyRectangle.SetValue(Canvas.TopProperty, top);

//设置矩形的圆角度

rect_MyRectangle.SetValue(Rectangle.RadiusXProperty, radius);

rect_MyRectangle.SetValue(Rectangle.RadiusYProperty, radius);

//获取矩形的宽和高

width = rect_MyRectangle.GetValue(Rectangle.WidthProperty).ToString();

height = rect_MyRectangle.GetValue(Rectangle.HeightProperty).ToString();

//输出文本

txb_MyText2.Text = "矩形的宽是：" + width + " 高是：" + height;

txb_MyText2.SetValue(Canvas.LeftProperty, 400.00);

}

运行如图：