Collapsing all child nodes of a parent node in a tree view control

[Anil Kumar M]

Hi,
I got a tree control where the order of nodes is three,
i.e Parent node---->First child node----> n child nodes of First child node.

i want to collapse all the child nodes of FirstChildNode. when i select any one of the child nodes , except the selcted node all the other child nodes should be closed.

iam doing like this in treenode_select() event
this.treJob.TopVisibleNode.FirstNode.CollapseAll();
this.treJob.TopVisibleNode.FirstNode.Expand();

but iam not successfull
any clues....

regards

seash

[Administrator]

Hi Seash

Here is a code snippet that demonstrates how when you right click on a node in a TreeViewAdv control and if it is not a top level node, it''s child nodes are collapsed:

private void treeViewAdv1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
if ((e.Button == MouseButtons.Right)&& (this.treeViewAdv1.SelectedNode.Level!=1))
{
if ((this.treeViewAdv1.SelectedNode.HasChildren))
{
this.treeViewAdv1.SelectedNode.CollapseAll();
}
else
{
MessageBox.Show("The selected node has no child nodes");
}
}
}

This should give you an idea to do what you are seeking.

Regards
Arun

[Satish]

Hi Arun, I just spoke to Seash. I made document what Seash whats in the TreeView. Please find the document. Thanks Satish >Hi Seash > >Here is a code snippet that demonstrates how when you right click on a node in a TreeViewAdv control and if it is not a top level node, it''s child nodes are collapsed: > >private void treeViewAdv1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e) >{ > if ((e.Button == MouseButtons.Right)&& (this.treeViewAdv1.SelectedNode.Level!=1)) > { > if ((this.treeViewAdv1.SelectedNode.HasChildren)) > { > this.treeViewAdv1.SelectedNode.CollapseAll(); > } > else > { > MessageBox.Show("The selected node has no child nodes"); > } > } >} > >This should give you an idea to do what you are seeking. > >Regards >Arun > TreeError_4660.zip

[Satish]

Hi Arun, Please hightlight the solution. Thanks Satish >Hi Arun, >I just spoke to Seash. I made document what Seash whats in the TreeView. >Please find the document. >Thanks >Satish > >>Hi Seash >> >>Here is a code snippet that demonstrates how when you right click on a node in a TreeViewAdv control and if it is not a top level node, it''s child nodes are collapsed: >> >>private void treeViewAdv1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e) >>{ >> if ((e.Button == MouseButtons.Right)&& (this.treeViewAdv1.SelectedNode.Level!=1)) >> { >> if ((this.treeViewAdv1.SelectedNode.HasChildren)) >> { >> this.treeViewAdv1.SelectedNode.CollapseAll(); >> } >> else >> { >> MessageBox.Show("The selected node has no child nodes"); >> } >> } >>} >> >>This should give you an idea to do what you are seeking. >> >>Regards >>Arun >> > >TreeError_4660.zip > >

[Administrator]

Hi Satish
Here you go:
private void treeViewAdv1_AfterSelect(object sender, System.EventArgs e)
{
if ((this.treeViewAdv1.SelectedNode.Level==1)&&(this.treeViewAdv1.SelectedNode.HasChildren)
&&(this.treeViewAdv1.SelectedNode.Expanded))
{
this.treeViewAdv1.CollapseAll();
this.treeViewAdv1.SelectedNode.ExpandAll();
}
}

Regards
Arun

[Satish]

Hi Arun,
The code you have mentioned below is not working. I want to achive same resuls as i posted the document in form.
Thanks
Satish

>Hi Satish
>Here you go:
>private void treeViewAdv1_AfterSelect(object sender, System.EventArgs e)
>{
> if ((this.treeViewAdv1.SelectedNode.Level==1)&&(this.treeViewAdv1.SelectedNode.HasChildren)
> &&(this.treeViewAdv1.SelectedNode.Expanded))
> {
> this.treeViewAdv1.CollapseAll();
> this.treeViewAdv1.SelectedNode.ExpandAll();
> }
>}
>
>Regards
>Arun
>

[Administrator]

Hi Satish

Here is a sample that does what you are looking for. This is the relevant code from the sample:
bool b = false;
private void treeViewAdv1_AfterSelect(object sender, System.EventArgs e)
{
if ((this.treeViewAdv1.SelectedNode.Level==1)&&(this.treeViewAdv1.SelectedNode.HasChildren))//&&(this.treeViewAdv1.SelectedNode.Expanded))
{
this.treeViewAdv1.CollapseAll();
this.treeViewAdv1.SelectedNode.ExpandAll();
}
}

private void treeViewAdv1_AfterExpand(object sender, Syncfusion.Windows.Forms.Tools.TreeViewAdvNodeEventArgs e)
{
if (b)
{

b = false;
this.treeViewAdv1.CollapseAll();
e.Node.ExpandAll();
this.treeViewAdv1.SelectedNode = e.Node;
}
b = true;

}

We would really appreciate it if you could use Direct-Trac for specific issues like this in future.

Regards
Arun

[Administrator]

Hi Satish Here is a link to the sample. Regards Arun