This example demonstrates ParamQuery support for checkbox columns.

• A grid can have one or more checkbox columns.
• Checkbox state can be bound to a field with boolean (true / false) or any string values e.g., "YES" / "NO".
• It's possible to have custom rendering of the checkbox cells.
• It's possible to have custom rendering of the checkbox header cells.
• It's possible to copy/paste and track history of checkbox columns like any other normal cell.
• Checkboxes can be disabled based on a condition selectively.