The URL to an image to display in the background of the FormView control. The default is an empty string (""), which indicates that this property is not set.
Use the BackImageUrl property to specify the URL to an image to display in the background of a FormView control.
Note
If the specified image is smaller than the FormView control, the image is tiled to fill in the background. If the image is larger than the control, the image is cropped.