Angular Tree Grid Selection

    With Ignite UI for Angular Tree Grid you can easily select data by using variety of events, rich API or with simple mouse interactions like single select.

    Angular Grid Selection Example

    The sample below demonstrates the three types of Tree Grid's cell selection behavior. Use the buttons below to enable each of the available selection modes. A brief description will be provided on each button interaction through a snackbar message box.

    Angular Grid Selection Options

    IgniteUI for Angular Tree Grid component provides three different selection modes - Row selection, Cell selection and Column selection. By default only Multi-cell selection mode is enabled in the Tree Grid. In order to change/enable selection mode you can use rowSelection, cellSelection or selectable properties.

    Angular Row Selection

    Property rowSelection enables you to specify the following options:

    • none - Row selection would be disabled for the Tree Grid
    • single - Selection of only one row within the Tree Grid would be available
    • multiple - Multi-row selection would be available by using the Row selectors, with a key combination like ctrl + click, or by pressing the space key once a cell is focused
    • multipleCascade - This is a mode for cascading selection, resulting in the selection of all children in the tree below the record that the user selects with user interaction. In this mode a parent's selection state entirely depends on the selection state of its children.

    Go to Row selection topic for more information.

    Angular Cell Selection

    Property cellSelection enables you to specify the following options:

    • none - Cell selection would be disabled for the Tree Grid
    • single - Selection of only one cell within the Tree Grid would be available.
    • multiple - Currently, this is the default state of the selection in the Tree Grid. Multi-cell selection is available by mouse dragging over the cells, after a left button mouse clicked continuously.

    Go to Cell selection topic for more information.

    Angular Column Selection

    The selectable property enables you to specify the following options for each column:

    • false - the corresponding column selection will be disabled for the Tree Grid
    • true - the corresponding column selection will be enabled for the Tree Grid
    • This lead to the following three variations:
    • Single selection - mouse click over the column cell.
    • Multi column selection - holding ctrl + mouse click over the column cells.
    • Range column selection - holding shift + mouse click selects everything in between.

    Go to Column selection topic for more information.

    Known Issues and Limitations

    • Using the Tree Grid with Selection enabled on IE11 requires the explicit import of the array polyfill in polyfill.ts of the angular application. IE11 is no longer supported as of version 13.0.0.

      import 'core-js/es7/array';

    • When the grid has no primaryKey set and remote data scenarios are enabled (when paging, sorting, filtering, scrolling trigger requests to a remote server to retrieve the data to be displayed in the grid), a row will lose the following state after a data request completes:

      • Row Selection
      • Row Expand/collapse
      • Row Editing
      • Row Pinning

    API References

    Additional Resources

    Our community is active and always welcoming to new ideas.