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TreeGrid versions compatibility

Changes log (txt file) Upgrading from 9.3 to 10.0 Upgrading from 5.9 to 6.0

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 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

Cells
Cell basics

Cell type Cell format Dynamic format and type Cell value Reading / writing attributes by API Cell HTML 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) Mathematical functions 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 Special cell style attributes Cell CSS class Cell background color Dynamic cell border Cell HTML style Row color alteration Cell mouse cursor

Cell types
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

Columns

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

Rows
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
Features
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

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 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

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

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

Upload changes

TreeGrid documentation

TreeGrid can upload data to remote or local server or include the data to HTML page and submit it.
You need to set Upload_Url for background AJAX upload or Upload_Tag for whole page submit.
<treegrid,bdo> prefix

Upload_

Data source to upload changes to server. It is called after click to Save button or for every change when is set AutoUpdate.
It can return success (<Grid><IO Result='0'/></Grid>) or error message or XML data with changes to apply them in grid.
By default is set Upload_Method="Form" Upload_Data="Data" Upload_Type="1" Upload_Format="Internal" Upload_Xml="0"
Supports only AJAX or Submit communication (Upload_Url or Upload_Tag attribute). The XML changes are sent in Data parameter.
<treegrid,bdo> string

Upload_Url

Set it to URL address to send the changes XML by AJAX or AJAX SOAP. The changes are stored in parameter Data.
When used AJAX method, the changes XML is upload on background while grid is still accessible.
If server returns success XML <Grid><IO Result='0'/></Grid> all the changes are accepted (the deleted rows are deleted, other rows are recolored to loose its flag).
If server returns error XML <Grid><IO Result='-1'/><Grid> or the AJAX call failed at all, the changes are not accepted and can be sent again.
The server can also return message to alert it to user to inform him about success or error: <Grid><IO Result='-1' Message='Save failed'/><Grid>
The server can also return some updates in <Changes> tag to do them in grid, for example mark some cell by Error to highlight it to user.
It is possible to set Upload_Sync="1" to wait for response and disable grid while waiting for response.
upd 11.0 <treegrid,bdo> string

Upload_Tag

Set it to <input> tag name or id where the changes XML will be stored. To use old Submit method of uploading.
This <input> tag should be placed within some <form>. This form will be automatically submitted to its action url.
After form submit, the whole page will be reloaded or redirected according to the <form> settings.
Since 11.0 if the Upload_Tag is set to "Debug", it does not upload the data, just prints them in debug window, if debugging print permitted.
chg 6.0 upd 12.1 <treegrid,bdo> string[ ]

Upload_Type

["Changes"]
What parts of grid will be uploaded to server, it is an array of comma separated keywords.
It can contain more keywords to send more parts to the server. The keywords are case insensitive. The order of filled parts is not specified.
Note, uploaded files in File type are not sent in the XML, but apart like the standard <input type="file"> values.
For example Upload_Type="changes,settings,cookie"

Changes
Modified rows - rows with set attribute Added, Deleted, Moved or Changed (modified values). The rows are sent in <Changes> tag.
Set this keyword to get only changed rows on server to update a database according to the changes.
The rows have filled only attributes required for its state like Parent or id. To fill any other or custom attribute set Upload_Attrs.
To fill all column values or values from defaults specify Upload_Flags="Defaults" or "AllCols"

Selected
Selected rows - rows with set attribute Selected. The rows are sent in <Changes> tag.
Set this keyword to get the selected rows on server to do action on server with these rows.
The rows can be selected by a user or by search or by API.
The rows have filled only id attribute. To fill any other or custom attribute set Upload_Attrs.
To fill all column values or values from defaults specify Upload_Flags="Defaults" or "AllCols"
Since 12.1 it uploads also all selected cells of the rows with Selected=2.
Since 12.1 it uploads also all selected columns.

Resized (since 11.0)
Resized rows - rows with changed Height. The rows are sent in <Changes> tag.
Rows resized by a user.
The rows have filled only id and Height attributes.

Cells (Since 12.0)
Rows with some attribute changed. The rows are sent in <Changes> tag or since 12.1 in <Body> tag if Upload_Type contains also "Changes".
If set, stores all original data on start for comparing. Therefore it must be set on start.
Use it with NoEmpty Upload_Flags to list only changed rows.

Body
All variable rows. The rows are uploaded as they are in pages and body, in tag <Body><B></B></Body>
Set this attribute to get the whole body to just store it on server and return it in next body request.
To fill only column values specify Upload_Flags="AllCols". To fill only some specified attributes set Upload_Attrs.
Setting this attribute can significantly slow data communication for larger grids. Not compatible with server paging.

Data
All data rows (<I Kind='Data'/>). The data rows are all rows with no special meaning (unlike Header, Filter, Group, Search, Pager, Space, User).
The rows are uploaded as they are in pages and body, in tag <Body><B></B></Body>, <Head></Head> and <Foot></Foot>
These rows are variable (body) and can be also fixed rows.
Set this attribute to get all the cells that can have values to just store it on server and return it in next grid request.
To fill only column values specify Upload_Flags="AllCols". To fill only some specified attributes set Upload_Attrs.
Setting this attribute can significantly slow data communication for larger grids. Not compatible with server paging.

All
All rows in grid, including all functional rows (Data, Header, Filter, Group, Search, Pager, Space).
The rows are uploaded as they are in pages and body, in tag <Body><B></B></Body>, <Head></Head> and <Foot></Foot> and <Solid></Solid>
Set this attribute to get all rows on server to store the complete XML here and return it on next request.
To fill only column values specify Upload_Flags="AllCols". To fill only some specified attributes set Upload_Attrs.
Setting this attribute can significantly slow data communication for larger grids. Not compatible with server paging.

Span (since 7.0)
All rows with some cells spanned (through columns or rows), sends only attributes id, Span and RowSpan. The rows are sent in <Spanned> tag.
To send only changes in span, set rather Upload_Flags="Spanned" Upload_Type="Changes".

Gantt (since 6.3)
Uploads actual Gantt settings in <Gantt ... /> tag.
Uploads the attributes: GanttBase, GanttFinish, GanttExclude, GanttInclude.
(Since 8.0) When set Cfg DateStrings, the GanttBase and GanttFinish are uploaded also as strings in GanttBaseDate and GanttFinishDate attributes.

Calendars (since 8.0)
Uploads actual calendars in <Calendars> tag.

Resources (since 8.0)
Uploads actual resources in <Resources> tag.

Settings
Sends grid configuration similarly to Data and Page request.
Sends sort, group, search, print, export and other configuration settings in <Cfg>, filter setting in <Filters> and columns with Name, Width, Visible and (since 11.0) Spanned attributes in <LeftCols>, <Cols>, <RightCols> and (since 12.1) hidden fixed and space rows in HiddenRows attribute.

Expanded (since 6.7)
Sends ids of all expanded rows in <Cfg Expanded/> attribute, comma separated.

Hidden (since 12.1)
Sends ids of all hidden rows in <Cfg HiddenRows/> attribute, comma separated.

Cookie
Sends the whole configuration in <Cfg Cookie/> attribute like it is stored to cookies.
It can be used to store the configuration on server instead of client's cookies - based on some user identification and not browser.
Return this configuration in next request for Layout in <Cfg Cookie/> to apply it.
The Cookie should not be modified on server, it should be used as black box.

AutoCols (since 12.0)
Uploads actual count of all indexed columns (with HasIndex set) in Cfg AutoCols attribute.
Use instead of Settings to save just column count, not their attributes.

Cfg
Adds <Cfg> tag, sends all attributes from this tag, including some runtime internal settings.

Def
Adds <Def>,<D>,<Root> tags, sends all defaults with all attributes in Internal format only, including some runtime internal attributes.

Cols
Adds <LeftCols>, <Cols>, <RightCols>, <C> tags, sends all columns' settings, including some runtime internal attributes.

Other
Adds <MenuCfg>, <MenuColumns>, <MenuPrint>, <MenuExport>, <Pager>, <Actions> tags, sends all attributes of these tags.

Lang
Adds <Lang> tag, sends all texts and format settings.
upd 12.0 <treegrid,bdo> string[ ]

Upload_Flags

Various flags for extended control of uploading, comma separated list of keywords. It is case insensitive.
For example Upload_Flags="defaults,noio"

Index(Since 12.0) Sends row index (RowIndex) in row id attribute and uses column index (ColIndex) instead of column Name, for Upload_Type="Cells,Body,Data,All".
EditAttrs(Since 12.0) Sends all EditAttrs cell attributes like if they were listed in Upload_Attrs. For Upload_Type="ChangesCells,,Body,Data,All"
NoEmpty(Since 12.0) Does not send rows without any attribute set. For Upload_Type="Cells,Body,Data,All"
DefaultsSends also default values (from <D> tag) in rows if the row attribute value is null, for Upload_Type="Changes,Selected,Cells,Body,Data,All"
AllColsSends all column values in rows, including calculated cells, for Upload_Type = "Changes,Selected,Cells,Body,Data,All"
NoGantt(Since 12.0) Does not send the Gantt column attributes, for Upload_Type = "Cells,Body,Data,All"
Spanned(Since 7.0) Sends also changes in colspan (Span) and rowspan (RowSpan) attributes in <Changes> tag, for Upload_Type="Changes"
It must be set on grid start to store required information for the comparing changes.
NewId(Since 9.1) Sends all changes in row id in NewId attribute. For Upload_Type="Changes" and <Cfg> FullId or IdNames set.
All attributes referring the id like Parent or Next always contain the original id, not the NewId. The NewId is set to row id attribute after the changes are accepted.
AcceptedDoes not send deleted rows and does not send state attributes Added, Moved and Changed, for Upload_Type="Cells,Body,Data,All".
NoIODoes not send <IO> tag. The IO contains Session attribute.
NoGridDoes not include <Grid> tag, if you need to append some other tags to XML. The XML is not valid in this case!
upd 11.0 <treegrid,bdo> string[ ]

Upload_Attrs

Comma separated list of names of row attributes that are uploaded. The names must be in Internal format (col+name).
(Since 11.0) If the attribute name starts with '*', it is replaced by all column names to be the attribute uploaded for all cells.

For Upload_Type="Changes" specifies all custom attributes to upload with the changed rows. It adds all these attribute values to all the uploaded rows.
These attributes must not interfere with standard uploaded names like id, Added or Parent.
The Attrs are ignored when set SaveOrder='1'.

For Upload_Type="Selected,Body,Data,All" specifies all attributes except id and Def.
If this attribute is omitted, fills all rows' attributes. For large grids it can be significantly slower.
The row has always set id and Def attributes, do not include them to Attrs list.
chg 6.0 upd 6.6 <treegrid,bdo> string

Upload_Format

["Internal"]
If set to "DTD", the uploaded XML will be in DTD format instead of the Internal.
If set to "JSON", the uploaded data will be JSON string.
Used for uploading data or for request, input data format is always automatically recognized.
upd 8.1 <treegrid,bdo> int

Upload_Xml

[0]
If the uploaded data will be send as is or will be sent with coded XML entities.
For 0 (default) are uploaded data encoded to string (& and <,> are replaced by &amp; &lt; &gt;).
For 1 data are uploaded as XML without any change.
For 2 (since 8.1) are uploaded data encoded to JSON string (& and <,> are replaced by \u0026, \u003C, \u003E). To upload data in JSON format, set Upload_Format="JSON".
<treegrid,bdo> bool

Upload_Sync

Sets synchronous upload for AJAX communication.
The grid is disabled during upload and waits for server response.
new 6.4 upd 10.0 <Cfg> int

SaveOrder

[0]
If set to 1 and uploads all changes in <Changes> tag, it uploads them in the exact order they happened.
If set to 2 (since 10.0) it also separates all changes in one row.
If row is changed more times, it can be included more times.
All changes done in one row together (without changing another row between changes) are merged together, except SaveOrder is 2.
Undeleted deleted row is ignored. Deleted added row is ignored.
All changes done in row immediately deleted after (without changing other row) are ignored, except SaveOrder is 2.
All undone or redone changes are taken as new changes.
new 9.0 upd 9.2 <Cfg> type

CalculatedChanges

[0]
If set to 1, it marks as changed all changed calculated cells and rows.
(Since 9.2) If set to 2, it marks as changed also the cell calculated for first time if resulted to different value.
(Since 9.1) It can be set to comma separated list of columns to affect only these columns. Cannot be set by API to this list.
In the first cell calculation it stores the calculated value. If some next calculation returns different result the stored one, it marks the cell changed.
If the next calculation returns the same result as the first stored result, the changed flag is cleared.
It will also upload these changes to server.
chg 6.0 <Cfg> type

DateStrings

[0/1]
If set to 0, Date values are uploaded as numbers (milliseconds from 1/1/1970), see also GMT attribute.
If set to 1, Date values are uploaded as strings in English format (M/d/yyyy HH:mm:ss).
If set to 2, Date values are uploaded as strings in JAVA format (yyyy-MM-dd HH:mm:ss).
If set to string, it specifies the full date format for upload.
By default it is set to 0, if some date in input XML is set as number of milliseconds, otherwise is set to 1.
<Cfg> bool

AutoUpdate

[0] It is saved to and loaded from cookies
If automatically uploads all changes immediately to server.
If set to 1, after any change in data (edit cell, add, delete, move row) it sends changed data to server like a user clicked to Save button on toolbar.
upd 11.0 <I> int

NoUpload

[0/1]
If set to 1, ignores changes in this row and does not upload them to server. Often set with also NoColorState.
If set to 1, it also does not save undo for changed cells except the cell has set Undo='1'.
(Since 11.0) If set to 2, it works like 1 and if the row contains some pending changes, they are not accepted after save.
Default value is 0 for data rows and 1 for space rows and group rows.
Filter row has always set 1.
new 11.0 <C> int

NoUpload

[0/1]
If the column or its cells will be uploaded to server.
If set to 1, it does not upload this column cells when all cells for the row are uploaded. It is also removed from Upload_Attrs items with *.
If set to 2, it is also not uploaded in Upload_Type "Settings" and "Cols".
Default value is 0 for all columns except Gantt and Panel that is 1.

API for Upload

API event bool

OnSave

(TGrid grid, TRow row, bool autoupdate)
Called before changes are uploaded or submitted to server.
It is called from Save method that is called when a user clicks Save button. It is called after validation (see <Cfg Validate>).
It is also called whenever changes are uploaded by AutoUpdate (with autoupdate parameter set to 1).
Return true to suppress saving.
The row is set if only one row was changed, this is the row to update, only with autoupdate = 1.
API event void

OnAfterSave

(TGrid grid, int result, bool autoupdate)
Called after Save or AutoUpdate is done, the server response was received and changes accepted (if succeeded).
The result is the <IO Result/>, <0 error, >=0 success.
It is called only for AJAX communication.
new 6.0 API event string

OnUpload

(TGrid grid, string xml, TRow row, bool autoupdate)
Called to modify changes in XML data before they are uploaded.
The XML is the XML to upload (<Grid> ... </Grid>)
Return new XML data in string for upload or null to not change the data.
API method void

Save

(Event event)
Uploads all changes to server.
For AJAX it uploads all changes to grid.Source.Upload.Url. If server returns success, it accepts all changes.
For Submit it fills grid.Source.Upload.Tag input with all changes and submits form where the input is placed.
The event is set if the method is called from onsubmit event hander to this event. In this case it also validates data. It cancels the event if saving is canceled.
API method void

UploadChanges

(TRow row, function Func)
Uploads all changes to server, only if AutoUpdate is true. If row is set, uploads changes in the row only.
After finish, calls function Func: function Func (int result).
Accepts changes only if server Result is ok (>=0), if result < 0 does not accept changes.
API method string

GetChanges

(TRow row = null)
Returns all changed rows in XML string to upload to server. If row is set, returns changes of this row only.
Format of the data is used according to grid.Source.Upload.Format.
upd 11.0 API method int

HasChanges

( )
If the grid contains some changed (Added/Deleted/Moved/Changed) or selected (Selected) rows.
Returns &1 if grid contains some change not yet uploaded to server. Only when SaveValues is not set.
Returns &2 if grid contains some selected rows. Only when SaveSelected is not set.
API method void

AcceptChanges

(TRow row = null)
Accepts all changes in grid - clears all flags Changed, Added, Moved and removes rows marked as Deleted.
Displays all updates in grid.
Can be called after server accepts sent data.
If row is set, updates only this row.
API method string

GetXmlData

(string type = Upload_Type+","+Upload_Flags, string attrs = Upload_Attrs)
Returns grid's data in XML or JSON according to Source.Upload.Format, type and attrs, see Upload_Type and Upload_Flags.
This method is used to upload changes to server by Save and AutoUpdate.
<Actions>

Save

Attached to event OnClickButtonSave
Uploads all changes to server and accepts them. See Save method.

XML structure sent to server

Data sent from grid to server. Used when uploading changes to server. This format is generated by grid.
Here is described default structure used for <treegrid Upload_Type='Changes'/>. For other settings the uploaded XML will contain other requested tags similar to Layout and Data XML.
Used as request sent to data source Upload.
Uploaded files in File type are not sent in the XML, but apart like the standard <input type="file"> values.

<Grid> (Root tag, can accept any count of introduced child tags in any order)
<IO ... attributes with client request ... />
<Changes> (list of changed rows)
<I id='...' ... row and cell attributes ... />
... More tags <I> ...
</Changes>
</Grid>

The uploaded rows can have set these attributes:
id - this attribute is always set to identify uploaded row. There are many ways to set this attribute, see rows identity.
NewId - it is set to new id if the row id will be changed after save. For IdNames or FullId settings changes. Set only when Upload_Flags='NewId'
Deleted - The row has been deleted by a user. No other attribute is set.
Changed - Some cell value of the row has been changed. The row contains values of all changed cell. The row can also contain the Moved attribute.
Moved - The row has been moved to new position. The Parent and Next attributes specify new position. The row can also contain Changed attribute.
Added - The row is new row. The row contains new generated id. The Parent and Next attributes specify new position. The Def attribute specifies default values.
The row also contains all cell values, that are not the same as default values and are not calculated.
Parent - (set for Added or Moved) - the parent row or page where the row has been moved row added. It is string for row id or number for page position.
Next - (set for Added or Moved) - the next row before it the row has been added or moved. It is string for row id.
Prev - (set for Added or Moved) - the previous row after it the row has been added or moved. It is string for row id.
Copy - (set for Added) - set only if the row is copy of another row and the source row does not have downloaded its children yet (in server child paging).
It is string for row id.

When server returns HTTP error or <IO Result < 0, the TreeGrid shows message if provided and does not accept changes. The changes can be sent again.
If server return HTTP OK and <IO Result is not set or is >= 0, the TreeGrid accepts all changes - deleted rows are physically deleted and other flags are cleared.

Example of changed data sent to server:
<Grid>
<Changes>
<I id='xy' Changed='1' A='12'/>
<I id='xa' Moved='1' Parent='aa' Next='xc' Prev='xb'/>
<I id='xz' Added='1' Parent='1' Next='' Prev='xx' A='3' B='7' C='5.4' D='-3' E='twenty six'/>
<I id='xg' Deleted='1'/>
</Changes>
</Grid>