expand/collapse TreeView only by node image click

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I have on my form a TreeView with a lots of items/nodes. When I double click a item of a node I run a procedure (depending of the clicked item).My problem is that I want it to expand/collapse only when I click on the icon of the node ( the + or - sign), not if I double click an item

Posted 26-Jan-11 23:44pm

gksdy2000

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Sergey Alexandrovich Kryukov 27-Jan-11 23:13pm

Click is not the only way to expand/collapse - you also do it via keyboard. Want to disable it, too? I don't recommend any of these modifications of expected UI behavior.
--SA

gksdy2000 27-Jan-11 23:29pm

I know method that treeNode.Expand(), treeNode.Collapse()

but When click event occurred.
Whether event was produced at node or was produced in image, I don't know

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T.Saravanann · Answer 1 · 2011-01-27T18:40:00

Solution 3

Hi,

In your double click event forced to collapse the selected TreeNode..

For ex:

In NodeMouseDoubleClick event write the following code..

TreeNode trNode = (TreeNode)e.Node;
trNode.Collapse();

Try this..

Cheers:)

Posted 27-Jan-11 18:40pm

T.Saravanann

Updated 27-Jan-11 18:41pm

v2

Comments

gksdy2000 28-Jan-11 3:42am

reply Thank.
But If do so, node is expanded after collapsed. ^^

Danimal70 · Answer 2 · 2012-03-23T04:19:00

VB

Private Sub tv1_NodeMouseClick(sender As Object, e As System.Windows.Forms.TreeNodeMouseClickEventArgs) Handles tv1.NodeMouseClick
  If e.X < e.Node.Bounds.Left Then
    Debug.Print("Img Click")
  Else
    Debug.Print("Txt Click")
  End If
End Sub

The e.X is the X-coordinate (horizontal position) of the mouse click. the e.Node.Bounds is the bounds (left/right/height/width) of the node text. So if the X coordinate is less than the node text bounds left-most position, the click occurred in the image area (to the left) of the node.

Ryan Zahra · Answer 3 · 2011-01-27T00:14:00

Solution 1

Check the TreeView NodeMouseClick event

private void treeView1_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)

Posted 27-Jan-11 0:14am

Ryan Zahra

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gksdy2000 27-Jan-11 23:19pm

Already I Checked the TreeView NodeMouseClick eventWhen clicked, whether it is that is clicked at node or it is that is clicked in image, it is no to distinguish.Is no there solution?

expand/collapse TreeView only by node image click

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