Specifies the render mode of command buttons in the grid.
The command item render mode depends on the command column's and grid settings. If these settings are set to Default, the command button is rendered as a link.
The command item is rendered as a link.
The command item is rendered as an image.
The command item is rendered as a button.
The button indicates a dangerous or potentially negative action.
A button with a colored border and without a background color.
A button of secondary importance.