I have a treeView , and i want to know if some node can be seen by a user.
I mean that no node abave it not needed to be expanded that that node will be seen .
Any idea how i can check this with out rotating to upper lever for that ?
Checked msdn but couldn't see property responsible for that ....
Some Example will really help....
Thanks a lot for help.
I assume if you want to know if a treenodes parent is expanded
TreeNode.Parent.IsExpanded
I think this is what you need:
Node myNode;
if(myNode.Parent.Expanded)
//Visible
Related
In my C# windows application there is a Treeview with some roots and child.The Need is that When I checked Parentnode all Childnode under this must be getselected and when i change checked state of childnode the parent node must be diselect?
I can only guess what you trying to achive. But at least it sounds similar to the Example that is provided in MSDN.
https://msdn.microsoft.com/en-us/library/system.windows.forms.treeview.aftercheck(v=vs.110).aspx
I am using the following Infragistics component for viewing hierarchical data.
http://www.igniteui.com/tree/drag-and-drop-single-tree
I could able to load data correct but the problem is wI cant expand multiple nodes simultaneously. I mean when I expand a node the other node collapsed expanding only the current node. Can some one please suggest if there is any configuration setting I am missing to accomplish this?
I want the nodes once expanded will remain expanded until user collapses it again.
Thanks,
Krishna Prasad
The option that controls that is singleBranchExpand. Set it to false to allow multiple nodes to be expanded at the same time. http://jsfiddle.net/ywtLL7ka/
$("#tree").igTree({
singleBranchExpand: false,
});
I currently have a simple tree view that contains one parent node with multiple child nodes. I was wondering if there is a way to find the location of the selected node in the parent tree.
I currently have an action event on the treeview and when the user clicks on the child it prints out the string value of the selected child. I have tried using:
int val = TreeView.SelectedItemProperty.GlobalIndex;
but it always returns 0. I have seen some examples in VB but I cant seem to get the same idea to work in C#.
You have to use the ItemContainerGenerator property of the Treeview.
http://msdn.microsoft.com/en-us/library/system.windows.controls.itemcontainergenerator.aspx
See: ContainerFromIndex and IndexFromContainer
Note that each TreeViewItem also has an ItemContainerGenerator (its an ItemsControl), so you'd have to recursively search down the tree if you have multiple levels.
I think the answer to all your treeview problems (and most ui ones) in wpf is to build a ViewModel. Anytime you start crawling the visual tree to look for elements that you are already binding to, you are doing things the hard way. Once you start using ItemsContainerGenerator you have to start worrying about a whole lot of issues you should not have to.
You are binding to a hierarchical structure. If that structure has a selected item property on each item and it is bound to the TreeViewItem selected item then you can just get the selected item in code and do everything else from there. Have a look at a similiar question here.
So i didn't find the answer i was looking for (I may of confused others with what my question was. by saying location). Anyways how I solved it was I got the string value of the child selected and compared it to my list. Thanks to those who answered!
I want to make in a TreeView (winforms) that each node will have in it a checkbox and two icons and text.
How I can implement this thing ? I am really a newbie c# programmer.
I have found this two that helped me to understand.
treeNode
treeView
but how I can show my icons and check box one near another shifter little bit in X dimension?
Can you help me with some example how that thing can be implemented.
Thanks for help.
Customizing a tree view is not for the feint of heart. But you're lucky, this project does exactly what you are asking for.
Basically I want to know if a given nodes children are visible in a Gtk.NodeView. I've tried tracking it myself however when you click on expand symbol next to a node it goes through a different function than when you click on the node itself.
so here's a basic diagram to try to explain.
-MainNode1
----ChildNode1
----ChildNode2
-MainNode2
so what I want to know is can the user see the child nodes of mainNode1. The problem that I'm running into trying to track this behavior with a bool value on the node itself is there are so many ways the node can be expanded that the bool value might get set to the wrong thing so I'm looking for a better way.
any ideas?
I've found the solution there's a function called getrowexpanded that I apparently missed when looking for a solution