How to remove all child nodes except the Root node

Question

1.22/5 (2 votes)

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I would like to remove all child nodes except the Root node.

Suppose if my treeview is as follows

Root
|->Child
|-> Child
|->Child

I would like to remove all child and finally i would like to display Root with out child nodes any idea please

Posted 23-Sep-10 4:12am

demouser743

Updated 23-Jul-19 23:09pm

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3 solutions

Solution 3

TreeView1.Nodes[0].ChildNodes.RemoveAt(0);
TreeView1.Nodes[0].ChildNodes.RemoveAt(1);
TreeView1.Nodes[0].ChildNodes.RemoveAt(2);

use this for treeview child node position

Posted 12-Sep-18 18:23pm

Member 13982644

Comments

Richard Deeming 13-Sep-18 15:00pm

Aside from the fact that this question is already solved, your solution is incorrect:

* If there are five or more child nodes, your code will remove nodes 0, 2, and 5, leaving 1, 3, and 6+ unscathed.

* If there are less than five child nodes, your code will throw an exception.

Solution 2

I believe you need to get an instance of the "Root" TreeNode, then Clear its Nodes property.

Posted 23-Sep-10 4:39am

Marc A. Brown

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E.F. Nijboer · Accepted Answer · 2010-09-23T04:31:00

Solution 1

C#

foreach(TreeNode node in myTreeview.Nodes)
{
   node.Nodes.Clear;
}

Good luck!

Posted 23-Sep-10 4:31am

E.F. Nijboer

Comments

demouser743 23-Sep-10 10:39am

Thanks :)

amiraziz 28-Apr-13 3:09am

and of course :
Clear(); is correct .