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TreeGrid versions compatibility

Changes log (txt file) Using custom CSS from 13.3 to 14.0 Upgrading from 9.3 to 10.0 Upgrading from 5.9 to 6.0

Using in JavaScript frameworks

Angular React Vue Other frameworks NodeJS server

Creating grid

Simple examples Basic information Creating grid Deleting grid Reloading grid Rendering grid Accessing grid by API

Data & communication
Data communication with server

Communication types AJAX communication AJAX SOAP envelope Submit communication Directly included data Data from JavaScript Cross domain / local load by JSONP Sessions (AJAX) Server response (AJAX) Synchronous communication (AJAX) Caching (AJAX) API (AJAX)

Download data

Settings for data download Layout XML structure Data XML structure

Upload data

Settings for data upload API for upload XML structure sent to server

Changing data from server

XML structure of download changes XML structure of request for a cell Synchronizing data with server

Input / output data formats

Complete list of tags Internal XML format Short XML format Extra short XML format DTD XML format JSON format

Cell basics

Cell type Cell format Dynamic format Dynamic type Cell value Reading / writing attributes by API Cell HTML Cell default Range or more values in one cell Cell with link URL Cell hint Cell tooltip / title Cell popup menu

Cell editing and changing values

Cell editability Defaults list Suggest list (auto complete) Changing cell value Mass cell change Clearing cells Editing cells Controlling <input> tag by JavaScript Input validation and restrictions Side checkbox Cell selecting

Calculations - cell formulas

Basics Formulas Mathematical functions Aggregate functions Special functions for actions Custom functions

Calculations - editable cell formulas

Basics Suggest list (auto complete) Actions for choosing cells Conditional functions Lookup functions Cell reference functions Logical functions Informational functions Mathematical functions Trigonometry functions Rounding numbers Number conversions String functions Date functions Summary functions Custom functions

Cell side buttons

Introduction Right side Button Left side Icon

Cell spanning

Column span Row span Dynamic spanning

Cell style and color

Basic grid style Sizing and scaling - responsive design Dynamic cell style attributes Cell CSS class Cell background color Dynamic cell border Cell HTML style Row color alteration Cell mouse cursor

Cell types
Auto type - Auto String - Text, Lines & Pass
Number - Int & Float

Format Localization

Date and time - Date

Format Calendar component Dates dialog Localization

List & combo - Enum & Radio

Introduction Definition Related lists Enum specific Radio specific

Checkbox - Bool
Action button - Button

Introduction Basic clickable button Switch button Radio / tab button Menu button Combo switch button Combo radio / tab button Special Space rows with buttons

Panel with more buttons - Panel

Definition Standard fast panel Custom panel

HTML and special types

Html type Icon type Abs type List type Editable Link type Editable Img type DropCols type Upload File type


Column basics Column index Column visibility Column visibility menu Column selecting Column tree Column position and moving Column adding and copying Column deleting Column width Column API

Row basics

Rows by functionality Rows by position Row name Row id Row index

Default rows

Description Example of default rows Example of changing default row Attributes

Row tree

Tree attributes Actions & API for expand / collapse

Row identification

Setting row id attribute Row id attribute in tree Row id created from cell values API for row ids

Row visibility
Row adding and copying

Five ways of adding rows to grid Adding and copying restrictions Adding new empty rows Copying existing rows

Row deleting Row moving and dragging Row selecting Row height Row API Space rows
Sorting rows

Sort settings Controlling sort position Comparing strings Sorting actions Sorting API

Grouping rows to tree

Group settings Creating groups Comparing strings Created group rows <D Group='1'/> User interface to choose grouping Grouping actions and API

Filtering rows

Filter settings Comparing strings User interface to choose filter Filter actions and API

Searching in rows and cells

Search settings User interface for search Search actions and API

Printing grid

Print settings Choosing items to print Page size Print API

Print / export to PDF

Introduction Client side settings Printing options Client side API Server side API Data sent from client to server

Export to Excel or CSV

Introduction Basic settings Communication with server Export API Client export Server export

Import from Excel

Basic settings Sheets manipulation

Copy & paste rows via clipboard

Copy & paste permissions Copying to clipboard Pasting from clipboard

Master - detail grids

Introduction External master - detail grids Nested master - detail grids Synchronizing grids Other attributes for master - detail

Pivot tables

Pivot attributes & API Pivot formulas

External objects (like Adobe Flash) Undo & Redo
Gantt and bar chart
Gantt objects

Gantt objects list Display settings Edit settings

Main bar

Definition of main bar and plans Main bar as Task Edit settings Main bar content and side html Tip on mouse hover Vertical position and height Style specific attributes API to manipulate Main bars Actions Side text (deprecated) Real Flow (deprecated)

Run bar

GanttRun Definition Extended definition Run bar as Task Edit settings Save format Selecting Run boxes Run box content and side html Tip on mouse hover Box identification Vertical position and height Style specific attributes Overlaid (Error) boxes Containers for more boxes Dragging - moving and resizing API to manipulate Run boxes Actions Run special formulas

Summary task

Main for Main Main for Run Editable Main Editable Run

Gantt icons - Flag & Point

Flag - icon with text Point - math points

Gantt display objects

Header - column captions Cell and column Background Vertical movable Line Mark & Progress line

Gantt zoom

Zoom options Chart size limits Zoom selection Paging in Gantt chart

Dependency, constraints & schedule

Introduction Data units Defining dependencies Dependency colors and shapes Changing dependencies Correcting dependencies Scheduling algorithm Project date constraints Task date constraints Critical path - Slack (Float)

Gantt calendars

Global base calendar Local calendar Calendar list Calendars dialog Other settings

Gantt resources

Resources list Resources assign Resources filter Resources calculations Availability chart Resource usage chart Generated resource usage chart

Gantt popup menu Gantt API
Line and XY points charts

Charts in grid cells Chart JSON definition Base chart settings Basic attributes Size Axis and caption Individual chart lines Data sources Visual settings API for standalone usage

Paging in large grids
Paging root rows

Paging types and attributes Auto adding root pages API for paging

Pager components

Side pager Side pager type Pages Side pager type Gantt Side pager type Custom Pager with navigation buttons & edit Pager as list of page indexes

Paging in tree

ChildPaging - load / render on expand MaxChildren - limit children count ChildParts - load / render on scroll

Paging columns

Paging types and attributes Auto adding column pages API for column paging

Server paging

Server paging for root rows Server communication in root paging Root paging in very large tables Server paging in tree Server communication in tree paging XML Request for Data in root paging XML Download Data in root paging XML Request for root Page / children XML Download root Page / children API for server paging

TreeGrid DLL/SO for server paging

Introduction Compatibility with TreeGrid control Using TreeGrid server DLL/SO ASP.NET C# ASP.NET VB PHP JSP Java TreeGrid server concepts Function reference Calculations

JSON menus and dialogs
JSON menu description JSON menu definition example
Menu settings

Base attributes Visual settings Key navigation Behavior Size and scroll

Menu item settings

Base attributes Clickable item Inactive caption Collapsible sub level Popup sub menu Columns Bool item Enum item Edit item

Custom menu in JavaScript

Show custom menu Custom menu position Custom menu advanced settings Custom menu JavaScript events Custom menu JavaScript methods

Calendar dialog Custom calendar & JavaScript events Custom dialog in JavaScript
Global grid settings
Grid size and scroll

Default behavior Maximize grid height and width Update size according to the content Let a user to control the grid size Widths of individual sections Other scrolling attributes and API

Media rules - responsive design

Language & regional setup (Text.xml) Translate texts dynamically Change language

Grid cursor - Focus & hover

Focused cell and row Focused cell range Move and copy focused cells Filling cell values by dragging Tabulator navigation Key navigation Cursor look - focus & hover

Selecting rows, cells and columns

Selecting base Selecting rows Selecting cells Selecting columns

Global settings

Status messages Configuration menus Configuration menu - options Configuration menu - columns Configuration menu - print / PDF Configuration menu - export Default toolbar Language & regional setup (Text.xml) Useful API function Help file


Animations base Row animations Column animations Cell animations Animations for undo / redo Animations for server side changes Dialog animations

Grid configuration in cookies
Mouse & key events & actions

List of event handler types TreeGrid mouse events Mouse event names Key and mouse button prefixes Touch event names Event targets Assigning event actions / callbacks Event action parameters Calling actions from JavaScript Creating custom actions Focused vs. Actual cell TreeGrid key events JavaScript API events

Mouse API event TreeGrid files
Debugging and testing

Debug window Automated testing

Import from Excel

TreeGrid documentation

Loading xlsx files, handling more sheets.
Supported in all browsers except IE9 and older.
Included only in SpreadSheet component.

Basic settings

new 13.0 <Cfg> int


If and how the grid can open xlsx files, bit array.
1. bit &1 - If shows the Import button on toolbar. The Import button has assigned Import action.
2. bit &2 - If the xlsx file can be dropped to the grid to open it.
By default it is 3 if grid data source is xlsx file. Otherwise it is 0 and can be changed only if defined ImportExt and OnImportText.
new 14.0 <Cfg> string[]


Comma separated list of permitted file extensions for both import actions.
Use with OnImportText for custom import of any textual file.
new 13.0 <Cfg> bool


If column widths will be imported from xlsx.
new 13.0 <Cfg> int


Count of first rows in xlsx set as Header rows in Head section.
new 13.0 <Cfg> int


Count of first rows in xlsx assigned to the Head section (evaluated after ImportHeader).
new 13.0 <Cfg> int


Count of last rows in xlsx assigned to the Foot section.
new 13.0 <Cfg> int


Count of first columns in xlsx assigned to the LeftCols section.
new 13.0 <Cfg> int


Count of last columns in xlsx assigned to the RightCols section.
new 13.0 <Cfg> string[]


Comma separated list of attribute names which will be recognized/applied during the import (if present where relevant). The default is "all", i.e. all the supported attributes.
For example: ExportAttrs="Value,Align,Color,EFormula"
new 13.0 <Actions>


Attached to event OnClickButtonImport
Shows open dialog and lets a user to choose xlsx file to open it in grid. It asks a user to merge the files or discard the old file.
new 13.0 <Actions>


Not attached to any event
Shows open dialog and lets a user to choose xlsx file to open it in grid. It merges the old and new files.
new 13.0 <Actions>


Not attached to any event
Shows open dialog and lets a user to choose xlsx file to open it in grid. It discards the old file.
new 14.0 API event void


(TGrid grid, string data, object file, int type)
It is called when defined ImportExt, for both import actions.
Use if for custom import of any textual file, this event handler must parse the input data and pass it to TreeGrid, for example:
Grids.OnImportText = function(G,csv){ var json = CsvToJson(G,csv); /* Custom parse function */ G.Source.Data.Url = null; G.Source.Data.Data = json; G.ReloadBody(); }
data is the file content in string
file is JavaScript File object if loaded from dropped or opened file. It has set e.g. the name property as the file name.
type is 1 to merge files or 2 to discard the old file.
new 13.0 API event bool


(TGrid grid, object file, int type)
Called before the xlsx file is opened in grid, return true to not open it.
It is called only if the file is dropped or opened in grid, not if the file is loaded from Data_Url.
file is JavaScript File object. It has set e.g. the name property as the file name.
type is 1 to merge files or 2 to discard the old file.
new 13.0 API event bool


(TGrid grid, object file, object buffer, int type)
Called after the xlsx file is opened and set to grid data source grid.Source.Data.File. It is called before the grid is reloaded from this data.
file is JavaScript File object if loaded from dropped or opened file. It has set e.g. the name property as the file name.
file is string url if loaded from Data_Url.
buffer is JavaScript ArrayBuffer object with raw data loaded from file.
type is 1 to merge files or 2 to discard the old file or 0 if loaded directly from Data_Url.
new 13.0 API event bool


(TGrid grid, int error, string message, object file, object data)
Called if the xlsx file cannot be opened in grid.
error is error number:
-1 - Missing TreeGrid module Import - the module Import is included in Sheet component only.
-2 - Unknown or incorrect file format.
-3 - Missing TreeGrid external module JSZip. By default it is located in Grid/External/jszip.min.js.
-4 - Error parsing file. message contains more information about the error.
-5 - Error loading file. message and data contain more information about the error.
message is string error message for the error.
file is JavaScript File object if loaded from dropped or opened file. It has set e.g. the name property as the file name.
file is string url if loaded from Data_Url.
data is JavaScript ArrayBuffer object with raw data loaded from file. Or it is error object, if the file cannot be loaded. Or it is null if missing TreeGrid module.
new 13.0 API method void


(object file, bool nomessage)
Loads given xlsx file to grid. file is JavaScript File object.
If set nomessage, it does not ask user about discarding last data.

Sheet manipulation

new 13.0 <Space cell> string




Shows list of sheet names in actually opened xlsx.
It creates one space cell for every sheet. The sheets can be moved, copied and deleted by default, the tabs have predefined CanEdit="1" CanFocus="2" FocusCell="" CanCopy="1" CanDelete="1" and it presets also DragTab if not defined.
If the cell value is 2, it creates one combo with popup list with all sheets and the sheets cannot be moved or deleted in the combo.
To add new sheets defined new button like <Tabber Space="-1" Cells="Sheets,New" SheetsType="Sheets" SheetsWidth="50" NewButtonText="+" NewOnClick="AddSheet"/>
The tabs with sheets can be controlled also as standard tabs, as described at Radio / tab button .
new 13.0 <Space cell> bool


If the Sheets Type cell will display also hidden sheets.
new 13.0 <Actions>


Not attached to any event
Adds new empty sheet to the end of sheets and shows it in grid.
new 13.0 API event bool


(TGrid grid, string name)
Called before given sheet is shown in grid. Return true to not load the sheet.
Showing sheet reloads the whole grid by Reload method, therefore the grid object cannot be used later.
new 13.0 API method bool


(string name, bool save)
Loads given sheet into grid. If save is true, saves all changes done in grid to actual sheet.
Showing sheet reloads the whole grid by Reload method, therefore the grid object cannot be used later.
Returns true if reloading started successfully. The reloading is asynchronous, the sheet is not loaded in grid when function returns.
new 13.3 API method TGrid


(string name)
Loads given sheet synchronously without rendering it and returns the created grid.
If the sheet is already loaded, just returns its grid object. The grid object is normally placed to Grids array.
All the hidden sheets are deleted when reloading the active sheet.
It can be used to access data on other sheets than the actual one.

For example to upload data from all sheets in xlsx at once to server:
Grids.OnUpload = function(G,xml,row,auto){
if(row||auto) return;
var S = G.GetSheets(), A = [];
for(var i=0;i<S.length;i++) A[A.length] = "<Grid id='"+S[i]+"'>" + G.LoadSheetHidden(S[i]).GetXmlData("Body,NoGrid") + "</Grid>";
return "<Grids>"+A.join("")+"</Grids>";
new 13.0 API method string[]


(bool hidden = 0)
Returns list of sheet names in actual opened xlsx. If set hidden, it returns also hidden sheets.
new 13.0 API method bool


(string name, bool hidden = 0)
Returns if given sheet exists in actual xlsx. If set hidden, checks also hidden sheets.
new 13.0 API method string


( )
Returns name of active sheet in actual opened xlsx.
new 13.0 API method string


(string name)
Changes and returns given sheet name to be unique in actual opened xlsx.
new 13.0 API method void


(string name)
Deletes given sheet. If the sheet is active, loads next sheet or for only sheet it loads new empty sheet.
new 13.0 API method string


(string name,string newname)
Renames sheet name to newname. If the newname already exists in grid, changes it to be unique.
Returns the name that was set to sheet.
new 13.0 API method void


(string name,string next, bool copy)
Moves or copies the sheet name left side to the sheet next. If next is null, moves or copies the sheet as the last sheet.
If copied actual sheet, it activates the new copied sheet.