Tree grid demo

NET Tree List ASPxTreeList provides all the features you need for displaying information such as a Tree, a Grid, or a combination of both - in either bound or unbound mode with full data editing support. This demo showcases the Virtual Mode feature of ASPxTreeList, in which child nodes are generated on demand when a parent node is expanded. This demo illustrates the various edit modes available, including inline editing, editing via an edit form, and editing via a popup edit form.

This demo illustrates how you can allow a user to select all nodes, child nodes only, parent nodes only, or nodes above a particular level in the hierarchy. The CustomSummaryCaluculate event enables you to manually calculate summary values using a custom algorithm.

This demo illustrates how to calculate the sum of the values of selected nodes in a tree. NET Tree List ASPxTreeList enables you to group the most important or frequently used grid commands, and expose them through customizable toolbars for efficient end-user access. Get started today and download your day trial of ASP.

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Tree Grids

Version: v vol 2. See demo.TreeGrid is for displaying hierarchical tabular data laid out in rows and columns. It is otherwise identical to the Grid component, but it adds the possibility to show hierarchical data, allowing the user to expand and collapse nodes to show or hide data. See the documentation for Grid for all the shared features between Grid and TreeGrid.

TreeGrid is used by binding it to a hierarchical data provider. The data provider can be based on in-memory or back end data. For in-memory data, the TreeDataProvider can be used, and for loading data from a back end, you need to implement three methods from the HierarchicalDataProvider interface. Usage of both data providers is described in Hierarchical Data.

The TreeData class can be used to build the hierarchical data structure, and it can then be passed on to TreeDataProvider. It is simply a hierarchical collection, that the data provider uses to populate the TreeGrid. The setItems method in TreeGrid can be used to set the root level items. If at any time you want to modify the in-memory data in the grid, you may do it as follows. Note that for adding or removing nodes, you always need to call the refreshAll method in the data provider you are using.

The refreshItem method can only be used when just the data for that item is updated, but not for updates that add or remove items. TreeGrid nodes that have children can be expanded and collapsed by either user interaction or through the server-side API:. By default, the TreeGrid shows the hierarchy indicator by default in the first column of the grid.

TreeGrid supports setting a callback method that can allow or prevent the user from collapsing an expanded node. For nodes that cannot be collapsed, the collapse-disabled class name is applied to the expansion element.

Avoid doing any heavy operations in the method, since it is called for each item when it is being sent to the client. In addition to supporting all the listeners of the standard GridTreeGrid supports listening to the expansion and collapsing of items in its hierarchy.

The expand and collapse listeners can be added as follows:. The return types of the methods getExpandedItem and getCollapsedItem are the same as the type of the TreeGrid the events originated from. Note that collapse listeners will not be triggered for any expanded subtrees of the collapsed item. As opposed to Gridindividual cells are not focusable in TreeGridand only whole rows receive focus. The user can navigate through rows with Up and Downcollapse rows with Leftand expand them with Right.

My intention is to have the whole page become longer when rows get extended. This is what I had implemented years ago already but now on Framework 8 I am struggling. And all the examples out there seem to refer to TreeTable, not TreeGrid. My compiler says it cannot infer arguments, and when i try to use. It's a Java issue.Submit your support inquiries via the DevExpress Support Center for assistance. Developer Express Inc is proud to announce the immediate availability of its newest release, DevExpress v Built and optimized for desktop, web, and mobile developers alike With 40 categories and over products to choose from, DevExpress is honored to have been voted best in class 18 times in this year's Visual Studio Magazine Reader's Choice Awards DevExpress desktop components were voted best-in-class by readers of Visual Studio Magazine.

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When providing tree data to the grid you implement the gridOptions. The callback returns back a string[] with each element specifying a level of the tree. Below follows two examples presenting the hierarchy in different ways. When the grid is working with Tree Data there is no need to explicitly specify a Column Group as the grid will use the Auto Column Group.

However you will probably want to override some of the defaults as shown below:. As noted above, providing your own Custom Column Group has the advantage of giving you full control over the presentation of the Column Group, however it is not as convenient as using the default Auto Column Group.

One significant difference is that the entire dataPath array will be supplied as a value, rather than just the current node value. The following example combines all the steps above to show a simplified organisational hierarchy:. It is not necessary to include entries for each level in the path if data is not required at group levels as shown below:. The second variation above leaves out row data entries for 'Documents' and 'txt' nodes, in this case the grid will create Filler Groups for these.

This following example includes the column 'Group Type' to highlight which nodes are 'provided' in the row data and which are generated by the grid as a 'filler' group:. When using Tree Data, columns defined with an aggregation function will always perform aggregations on the group nodes. This means any supplied group data will be ignored in favour of the aggregated values.

However if there are no child nodes to aggregate it will default to the provided value in the row data. The File Browser example below demonstrates aggregation on the 'size' column. Also you can refer to the section on Aggregation more details. To override this behaviour to use regular filtering instead, enable the following Grid Options property:. Also note the Set Filter will contain a list of all unique values across each level of the group hierarchy.

The following example presents a more complex example which includes Aggregation and Filtering:. It is not possible to do pivot or row grouping while using tree data. This means all the functions related to pivot eg colDef. If you are showing child counts for the groups, then the child count is a count of all children and grand children.

This is different to Row Grouping where only leaf levels are counted, in tree data, all group children are also counted. To enable selection set gridOptions. However there are some restrictions to be aware of. The property groupSelectsChildren does not work with tree data. This is because groups in tree data are rows passed by the application that may or may not have children - a group is simply a normal row that has another row as a child.

Given groups and leaf nodes are logically identical, it is not possible to treat them differently in selection. If you want to achieve something similar to groupSelectsChildren then you should listen on the selection events and do the selection yourself in your application. You will come across edge cases where only your application will understand what the best selection outcome is.

Click selection is supported with tree data. For this reason we recommend not using click selecting and preferring checkbox selection instead.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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So I tried the Tree Data, no need to tell the link between parents and children, simply lay down the data in structure, specify some options, Bingo! But, when I plug in my API, it tells me. There are some answered Question here regarding customization with internal api. Mine is not. I then use the official demo as a base, set up a Fiddler to grab the raw data in JSON replace demo data to make it hardcoded for a test to determine if it's problem with own API or something else.

Here is the Plunker. As you have it you're telling the grid that any item with Client is a parent node, but what you really mean in your data is any item with Client AND kids is a parent.

Learn more. Asked 3 years, 1 month ago. Active 3 years, 1 month ago. Viewed 2k times. I like the ag-Grid because it's less buggy, fast and works with many frameworks. In case you don't want to see Plunker, here is my. Jeb50 Jeb50 2, 1 1 gold badge 16 16 silver badges 35 35 bronze badges. Active Oldest Votes.

Remember that the grid can have multiple levels so a child can be a parent too. Sean Landsman Sean Landsman 6, 2 2 gold badges 20 20 silver badges 27 27 bronze badges. But why the demo doesn't need that given the fact mine just mimic the demo? Child rows don't have any field contains "group". Only parents have a data field named "group".By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

So I tried the Tree Data, no need to tell the link between parents and children, simply lay down the data in structure, specify some options, Bingo! But, when I plug in my API, it tells me. There are some answered Question here regarding customization with internal api. Mine is not.

I then use the official demo as a base, set up a Fiddler to grab the raw data in JSON replace demo data to make it hardcoded for a test to determine if it's problem with own API or something else. Here is the Plunker. As you have it you're telling the grid that any item with Client is a parent node, but what you really mean in your data is any item with Client AND kids is a parent.

How are we doing? Please help us improve Stack Overflow. Take our short survey. Learn more. Asked 3 years, 1 month ago. Active 3 years, 1 month ago. Viewed 2k times.

tree grid demo

I like the ag-Grid because it's less buggy, fast and works with many frameworks. In case you don't want to see Plunker, here is my. Jeb50 Jeb50 2, 1 1 gold badge 16 16 silver badges 35 35 bronze badges.

Active Oldest Votes. Remember that the grid can have multiple levels so a child can be a parent too. Sean Landsman Sean Landsman 6, 2 2 gold badges 20 20 silver badges 27 27 bronze badges. But why the demo doesn't need that given the fact mine just mimic the demo? Child rows don't have any field contains "group".

tree grid demo

Only parents have a data field named "group". Rename to "xgroup"still works. Take a look at this plunker. Does ag-Grid look for a data field whose name contains group and treat it as a parent? There's nothing special about group in this case - its just a label. In the plunker you've change both the property and the check in getNodeChildDetails to both be rowItem.

My understanding is both xgroup and group are data field names, right?Drag a package from Travel Packages to Favorites to create your wishtree. Added to this are SEO compliance, full drag-and-drop capabilities, and nearly codeless development experience. Imagine the bulk of rendered HTML output generated by a treeview populating thousands of nodes.

Now picture the performance issues that may arise from all of this HTML. Rich user interactivity is supported right out of the box, including: node drag-and-drop, node editing, and node context treeviews. NET AJAXa comprehensive toolset taking care of the common functionality of your application, while leaving you with more time to work on its business logic. UI for ASP. Toggle sidebar All Controls. Data Management. Data Form. Data Pager.

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tree grid demo

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