By default rows in grid can be selected by single click. Next commands can be used for program selection operations

    grid.selectRow(...)
    grid.selectRowById()
    grid.selectCell(...)

Multi-selection mode in the grid can be easily enabled in the following way:

        grid.enableMultiselect(true|false); // false by default

[Shift/Ctrl] keys should be used for selecting multiple rows at a time.

Starting from dhtmlxGrid v1.3, additional selection mode is supported in the grid - block selection. To activate this mode, the user needs to include dhtmlXGrid_selection.js file into the project.

It is possible to select any block of content and copy it to the clipboard in this mode. Block paste from the clipboard is also available.

The selection can be removed from the grid in the following way:

        grid.clearSelection();

The following method is responsible for selecting all rows in the grid:

          grid.selectAll();