When you test a DataWindow in the Test window of the DataWindow Painter, you can display number of rows in the DataWindow and the DataWindow buffers. 

To display the row counts:

1. Click Test on the Design Menu or press Ctrl+T.  The Test window displays.
2. Select About on the Rows Menu.  The About Rows window displays the number of rows:

Displayed in the Test Window

Contained in the Filtered buffer

Contained in the Deleted buffer

Modified in the Primary buffer

TIP:   All the counts are zero until you click the Retrieve button to retrieve the data from the database.  The count will change if you modify the displayed data or test filer criteria

3. Click OK.  PowerBuilder closes the About Rows window.