How to expand only the selected node in treeview control?

Question

I have a treeview control. By default the treeview expands and shows all its child nodes. I need to show only the node that is selected.

Vishnu Bhangale · Answer

try this http://cssmenumaker.com/menu/elegant-accordion-menu

Khargesh Rajput · Answer

not sure but you can try http://www.dotnetsharepoint.com/2014/04/click-node-text-to-expandcollapse.html http://forums.asp.net/t/1194490.aspx?Treeview+Navigation+Expand+and+Collapse+on+Node+click

Deepa Sudhir · Answer

It sure did work when the nodes are clicked. Thank you for guiding me...But i realized that it doesn't work when the text in the node is clicked. How to solve that? When the text is clicked, the topmost parent and child expands

Khargesh Rajput · Answer

on page load wriite to collapse or visit link http://www.dotnetcurry.com/showarticle.aspx?ID=257

Deepa Sudhir · Answer

I am using the DataSourceID="SiteMapDataSource1" so where do i specify TreeViewArtMaterial.CollapseAll();

Khargesh Rajput · Answer

no property to be add but after bind treeview try once TreeViewArtMaterial .CollapseAll(); and below link may help you http://www.dotnetcurry.com/showarticle.aspx?ID=257

Deepa Sudhir · Answer

width="250px" OnTreeNodeExpanded=" TreeViewArtMaterial_TreeNodeExpanded" > Is there any other property to be set here?

Khargesh Rajput · Answer

protected void TreeView1_TreeNodeExpanded(object sender, TreeNodeEventArgs e) { if (e.Node.Parent == null) return; string strNodeValue = e.Node.Value; foreach (TreeNode node in e.Node.Parent.ChildNodes) { if (node.Value != strNodeValue) node.Collapse(); } } working fine for me

Deepa Sudhir · Answer

I tried this. But when a new parent node is clicked the topmost parent node and child nodes expand without the current node being expanded. It works fine only for the first node and its children.

Khargesh Rajput · Answer

write on treenode_expanded event protected void TreeView1_TreeNodeExpanded(object sender, TreeNodeEventArgs e) { if (e.Node.Parent == null) return; string strNodeValue = e.Node.Value; foreach (TreeNode node in e.Node.Parent.ChildNodes) { if (node.Value != strNodeValue) node.Collapse(); } }

Deepa Sudhir · Answer

I am implementing the treeview along with sitemappath taking values from sitemap in a master page. By default all the treeview nodes are expanded which i don't need. Only the selected nodes have to be expanded.

Deepa Sudhir · Answer

Accordion menu can have only one submenu, right? I have another submenu inside the submenu. will Accordion help?

Khargesh Rajput · Answer

i think accordion menu is better then treeview to expand only selected node to be open at a time see demo with source code. http://www.dynamicdrive.com/dynamicindex17/ddaccordionmenu-bullet.htm http://www.dynamicdrive.com/dynamicindex17/ddaccordionmenu.htm

Manish Kumar Choudhary · Answer

Go through following articles it will help you http://stackoverflow.com/questions/14596723/how-can-i-get-all-expanded-nodes-in-treeview https://msdn.microsoft.com/en-us/library/system.windows.forms.treeview.checkboxes%28v=vs.110%29.aspx http://www.codeproject.com/Questions/196856/C-NET-Treeview-Node-Checked

How to expand only the selected node in treeview control?

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Answers (14)