Retrieves a value that indicates whether the data grid item is off the screen.
Assembly: System.Windows.Controls.Data (in System.Windows.Controls.Data.dll)
does not indicate whether the element is visible. In some circumstances, an element is on the screen but is still not visible. For example, if the element is on the screen but obscured by other elements, it might not be visible. In this case, the method returns false.
The return value is based on the name of the row header group owner, if one exists. Otherwise, this implementation returns true.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.