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TreeGrid Gantt chart SpreadSheet Examples Documentation Download Development Licensing Prices References Contacts Buy Try it free
Live examples
Grids and tree grids

Complex grid - the first one Complex grid - RTL mode Large table with paging Large table without paging Multiline & images - books Positions and spanning Photo album - images PivotTable - 2D grouping Schools - list and ratings File and directory browser Extended JavaScript API Sharing & synchronization 1 000 000 rows, 1 000 cols


Microsoft Excel sheet TreeGrid sheet TreeGrid sheet - RTL mode

Gantt and bar charts

Gantt & Network chart Gantt & Network chart - RTL Simple Gantt chart Big Gantt chart - 1000 rows Gantt chart tree by grouping Resources usage chart Run chart - bar chart Grouping bars - run groups Joined boxes and containers Line chart and XY charts

Live grid tutorials
Basic (rows and columns)

1. Basic grid 2. Rows 3. Columns 4. Default rows, columns 5. Rows manipulation 6. Rows identification

Cells (types, formats, edit)

1. Edits - inputs & multiline 2. Combos & checkboxes 3. Html, links, imgs, buttons 4. Space buttons & tabs 5. Permissions & validation 6. Cell CSS style & color 7. Conditional formatting 8. Custom controls & editing 9. Events & custom dialogs 10. Column & row spanning 11. Dynamic cell spanning

Tree (rows, columns, groups)

1. Row tree 2. Column tree 3. Grouping rows to tree

Sorting rows

1. Sorting rows

Filter and search

1. Filtering rows 2. Filtering in tree 3. Search & advanced filters


1. Dragging rows 2. Dragging between grids 3. Dragging external tag

Paging (rows, tree, columns)

1. Client root paging 2. Client child paging 3. Client column paging 4. All client paging 5. Adding pages dynamically 6. Server root paging 7. Server child paging 8. All server paging

Master and detail

1. Nested detail simple 2. Nested detail tables 3. Master detail simple 4. Master detail tables 5. Master detail more tables 6. Master detail in tree 7. Master detail trees 8. Nested detail nested deep 9. Nested detail server paging

Calculations (cell formulas)

1. Calculated columns 2. Calculated rows 3. Calculation order 4. Calculated rows in tree 5. Calculation order in tree 6. Calculated attributes 7. Editable calculated cells

Live Sheet tutorials
Sheet features

1. Row and column Index 2. Auto size (auto adding pages) 3. Row&column manipulation 4. Cell manipulation 5. Cell style 6. Editable formulas (ids) 7. Editable formulas (indexes) 8. Cell format 9. Outside edit 10. Auto tree

Live Gantt tutorials
Main bar (Gantt chart)

1. Main bar 2. Discrete main bar 3. Main bar plans 4. Summary tasks

Run bar (Bar chart)

1. Run array definition 2. Run JSON definition 3. Run summary definition 4. Run drag 5. Run groups & API 6. Run bar as task 7. Run box as task 8. Network diagram 9. Run join and drag 10. Run external drag 11. 2 fixed levels containers

Flags and points

1. Flags 2. Points

Display, zoom, paging

1. Header & background 2. Zoom 3. Paging 4. Synchronizing more Gantts

Dependencies & scheduling

1. Constraints 2. Dependencies 3. Schedule tasks 4. Critical path


1. Calendars exclude


1. Resources 2. Availability

8. Custom controls and editing

Defining custom controls in cells, especially for editing

  • Use


    event to


    the custom control in normal, not editing state. This event receives cell values and should return the HTML code to be displayed in the cell.
    Remember, the OnGetHtmlValue event is called whenever the cell is refreshed, it can be many times, so the handler should be fast and also it must not attach to the cell any temporary objects or properties.
    • Or just use Html type cell and define the HTML code directly in the cell value instead of the event.
    • If the custom control does not require any special HTML for display, use standard TreeGrid cell with formatted value.
  • To


    the cell value in custom control define OnCustomStartEdit and OnCustomEndEdit.
    • In


      create the custom control object, display it in grid, focus it and return it back from the handler.
      The event receives tag inside that the control should be displayed. The control can be displayed directly in the tag as its child, or above it in absolute position.
      If the handler returns null, the standard editing action will be done.
      • The control should override and cancel key events that it don't want to propagate to TreeGrid key handlers.
        In edit mode TreeGrid handles onkeypress for Enter (13) and onkeydown for Esc (27), arrow Up (38), arrow Down (40), Tab (9) and Shift + Tab.
      • If the control requests to finish editing, it should call Grid.EndEdit(1) to save the changes and Grid.EndEdit(0) to discard the changes.
        The EndEdit calls OnCustomEndEdit handler, so the control should never modify the cell value directly when finishing edit.
    • In


      read the edited value from the control, destroy the control and return the value from the handler.
      This event receives the custom control object returned by OnCustomStartEdit.