News in version
Buy Try it free
TreeGrid Gantt chart SpreadSheet Examples Documentation Download Development Licensing Prices References Contacts Buy Try it free
TreeGrid SpreadSheet Examples Documentation References
Gantt chart Download Licensing & prices Contacts
TreeGrid Examples Download
Gantt chart Documentation References
SpreadSheet Licensing & prices Contacts
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

Sheets

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

Dragging

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

Calendars

1. Calendars exclude

Resources

1. Resources 2. Availability

6. Server root paging

Manual paging of root rows on server side

    This example does not use any server script, so it does not sort, filter and group the rows ! These features are here only to show the server communication.
    To see how to support server side sort, filter and group run the examples at /Examples/xxx/Paging/ and /Examples/xxx/PagingDLL/.

Source:  Layout.xml   06-Data.xml   06-Page1.xml   06-Page2.xml   06-Page3.xml   06-Page4.xml   06-Page5.xml   ...
Server communication
  • Server side paging is done by server script that generates the page list and the individual rows on demand.
    Implementation of server paging is not easy and requires a lot of work on server side! For more information see Server paging documentation.
    TreeGrid provides server side DLL/SO library that provides the most of work to support the server paging, but it can be used only in some cases, see the DLL documentation.

  • How server root paging works


    • On start it uploads to data source

      Data_Url

      actual state of sorting, filtering, grouping and search and downloads back the list of pages.
      The server script should prepare the list of pages according to the uploaded information.
    • When any page becomes visible due scroll, TreeGrid uploads to data source

      Page_Url

      the page identification (and also the sorting, filtering, grouping and search state) and downloads back all the rows for the page.
      The server script should find the rows for the page and return them back to the grid. It can use the information about the grid state or use some data prepared in the first request for the body.
    • When any grid state of sorting, filtering, grouping or search is changed by a user, grid reloads the pages list from Data_Url with the new state information and starts again downloading the visible pages.
  • Server root paging is set by Cfg attribute

    Paging

    ='3' defined in Layout data source (e.g. in Layout_Url).
    Both the data sources (Data_ and Layout_) must be used. The Layout must define the whole grid configuration, all columns and all Fixed and Space rows. The Data must return only pages.
  • The Data response is a list of pages as list of of <B> tags.
    The <B> can contain rows list like page in client paging to fill the page immediately without downloading on demand.
    Or it is empty <B> tag as page to be downloaded on demand. It can have attribute Count as expected count of the rows in the page. And attribute Name as the page name shown in the right side pager.
  • Remember, server must return the rows already sorted, grouped and filtered. The grid on client side does not sort, filter or group the data, just provides interface for users to change the state and after the change it reloads newly arranged data from server.
    The server side script is not a part of TreeGrid and must be created by developers!. Although TreeGrid provides many examples that can be used as fundamental to create the server script.
    TreeGrid also provides the mentioned DLL/SO library that sorts, filters and groups the data automatically and serves the pages on demand.

  • Calculations in server paging


    If the grid contains some summary rows or cells in fixed / space rows, the data must be precalculated on server side by server script.
    The results of the summary functions must be filled as attributes to the <B> tags in format ColNameFuncName='result on page'.
    In this tutorial example the toolbar formula sums all values in column named N. So all the pages (<B> tags) must have attribute Nsum='xxx' as sum of all cells in the N column on this page.
  • The Cfg attribute

    OnePage

    can be used if the server is not able to provide some or all the features (sort, filter, group).
    To use the OnePage, there must be also set AllPages='0' to show only one at a time.
    When set OnePage, the feature (sort, filter, group) is done by TreeGrid on client and only on the actually displayed page, so it does not affect the other pages in grid.

  • Static files


    In the most cases the body and the pages are created and served dynamically by some server script.
    But it is also possible, like in this tutorial example, to load the body and the pages from static files.
    For static file it is required to set Data_Method='Get' and / or Page_Method='Get'.
    In this case the data source address supports wildcards according to the page identification and sorting state: *Pos, *id, *Rows, *Sort0, *Sort1, *Sort2.