I'm creating a context menu with two parent nodes.
I want to rewrite each child node by asynchronous processing.
I want to keep the parent node visible all the time.
How can I remove and replace all child nodes?
Related
There is an existing TreeView with a single item. Lets say that tree consist from some object that has it own id, and parentId. Now i would like to add to tree parent item, that child reference to it by its parentId.
The idea is to handle input with a large amount of nodes that is not always sorted by father first.
How can i repopulate my tree with maximum efficiency ?
Take a look here : http://www.c-sharpcorner.com/uploadfile/9f4ff8/add-root-node-child-node-to-a-treeview-selected-node-at-runtime-and-rename-the-selected-node/
There is a method "Add Root node"
There is a method "Add child node"
I think you are ok.
how to write a click event for a child node of a tree view control...
if i click the child node a static panel should be visible.
As far as I know , the only way is to programatically tell which node is selected (retrieve the appropriate node via the e.Node parameter), then fire the corresponding functionality.
This code can be placed within TreeView.AfterSelect event.
I have a treeview control in asp.net. It has multiple parents nodes and under each parent node, there are multiple child nodes. When I select a parent node (click on it) a TreeView event called TreeView1_SelectedNodeChanged is triggered. I can write custom code based on requirements. What I am looking for is "On Select" or "On Click" for a Child node. I do not see any events for a child tree node. How do I do this? Although I can write code for Parent node click, I dont see anything for child node click or select.
When you add the child node you can set the SelectAction:
child.SelectAction = TreeNodeSelectAction.Select
That should do it.
Is method that do it to be extended by icon in front of node without clicking node only?
If you can get a reference to a TreeNode object, you can call the following methods:
treeNode.Expand()
treeNode.Collapse()
These will expand and collapse any given node, assuming you want to do so programmatically rather than requiring the user to click the node.
Is is possible to display a node without children as a leaf node within the .NET 3.5 TreeView control?
I have a treeview that displays a list of companies as nodes which would each display leaf nodes for documents belonging to that company.
If a company exists without any documents I would still like it to be rendered as parent (folder) but it renders as a leaf (file).
I could add a "No Documents" node to the company but this seems ugly and would add overhead to manage whether or not the node is there or should be added.
There doesnt seem to be any properties on TreeNode that would help here
Any ideas?
Thanks
The only way I discovered to resolve this issue is to add a "No Document" leaf to any empty parent folder