Adding a selected rows count textblock

When defining an interface where the user will select elements in a grid, it is often useful to include a textblock in the UI showing the amount of items selected by the user.

This can be done in K2BTools editing the Basic Layout object used to generate the panel, adding a textblock with its control name set to "GridSelectionCount". This can be done in all layout objects except in Entity Manager and General layout objects.

If the textblock is present in the layout, it will be copied to the final object if the grid contains rows selection, and its caption will be updated when the user selects rows.