wp7 在Grid中实现元素叠加

//创建Border
 Border imageBorder = new Border();
 imageBorder.Width = picWidth;
 imageBorder.Height = picWidth;

 //创建Grid
 Grid imageGrid = new Grid();
 imageGrid.Width = imageBorder.Width;
 imageGrid.Height = imageBorder.Height;

 //设置Grid为Borde的子元素
 imageBorder.Child = imageGrid;

 
//创建图片
Image image = new Image();
 //设置图片资源
 image.Source = new BitmapImage(new Uri(imageurl, UriKind.Relative));
 //添加图片到Grid中
 imageGrid.Children.Add(image);

ImageBrush imageBrush = new ImageBrush();
                    imageBrush.ImageSource = new BitmapImage(new Uri(imageurl, UriKind.Relative));
                    imageGrid.Background = imageBrush;

                    image.Width = imageGrid.Width - 14;
                    image.Height = imageGrid.Height - 14;

                    descImage.Source = new BitmapImage(new Uri(imageurl, UriKind.Relative));
                    descImage.Width = imageGrid.Width;
                    descImage.Height = 60;
                    descImage.VerticalAlignment = VerticalAlignment.Bottom;
                    //descImage.Margin = new Thickness(0,50,0,7);
                    //添加说明图片到Grid中
                    imageGrid.Children.Add(descImage);


                    RichTextBox priceText = new RichTextBox();
                    priceText.HorizontalAlignment = HorizontalAlignment.Left;
                    priceText.VerticalAlignment = VerticalAlignment.Bottom;
                    priceText.FontSize = 20;
                    priceText.FontFamily = new FontFamily("Microsoft MHei Light");
                    priceText.Margin = new Thickness(2, 0, 0, 7.5);
                    imageGrid.Children.Add(priceText);

                     RichTextBox text = new RichTextBox();
                    text.HorizontalAlignment = HorizontalAlignment.Right;
                    text.VerticalAlignment = VerticalAlignment.Bottom;
                    text.FontSize = 20;
                    text.Margin = new Thickness(2, 0, 0, 9);
                    text.FontFamily = new FontFamily("Microsoft MHei Light");
                    imageGrid.Children.Add(text);