TreeViewAdv redraw bug when programatically expanding.

[Krunoslav Leljak]

Hi there,

I have following problem. When I programatically
expand selected node, after call of EndUpdate
tree is not repainted.
Is this a bug, or maybe I do something wrong?

Here is the code:

private void miExpandAll_Click(object sender, System.EventArgs e)
{
TreeNodeAdv tn = tv.SelectedNode;
if ( tn == null )
return;

tv.BeginUpdate();

tn.ExpandAll();

tv.EndUpdate();
}

[Vijayanand S]

Hi Krunoslav,

I am afraid, BeginUpdate method will stop the painting of the control untill EndUpdate method is executed. If we expand the tree between these two methods, TreeViewAdv will not show the expanded nodes.

Inorder to avoid this problem, you have to call the ExpandAll method after BeginUpdate/EndUpdate methods.

If this behavior is not desirable, could you please let me know the exact usage scenario of these methods(BeginUpdate/EndUpdate) in your application and let me know your Essential Studio version? Thanks for using Syncfusion products.

Regards,
Vijay

[Krunoslav Leljak]

Well after EndUpdate() tree control should be redrawn correctly (right?), but it isn''t.
Also when I call TreeView.Refresh() afterwards
it is still not redrawn correctly. I suppose this is really a bug.

ExpandAll without BeginUpdate..EndUpdate block
looks very ugly on large trees.

It worked correctly in previous versions of
Syncfusion.

[Vijayanand S]

Hi Krunoslav,

Sorry for the inconvenience caused.

Could you please let me know the Essential Studio version number currently you are using?

Thanks,
Vijay

[Krunoslav Leljak]

The version with problems is 4.1.0.62

>Hi Krunoslav,
>
>Sorry for the inconvenience caused.
>
>Could you please let me know the Essential Studio version number currently you are using?
>
>Thanks,
>Vijay

[Vijayanand S]

Hi Krunoslav,

This is an already known issue and it has been fixed internally. The patch for this issue is available now. If you need a patch for this issue, please create a Direct trac incident regarding this forum.

Thanks,
Vijay

[Deepa TS]

Hi Krunoslav, The fix for the "TreeViewAdv does not refresh when we call Collapse/Expand method" has been included in our Final release of v.4.2(v.4.2.0.37) . And you can download the same from the following link: 4.2VFinalRelease Let me know if you need any further assistance. Thanks for your interest in Essential Tools. Regards, Deepa