Treeview item Visibility change (Dynamically)

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I have a treeview in my wpf application's xaml file
which uses a hieracialdatatemplate
so based on my Observable collection inside the viewmodel i am populating my tree view

how shall i make a treeview item visibility to false
currently i am using the visibility property to Collapsed

but i still an empty space is left inside the treeview.

How shall i totally remove the treeview item when even i want

I mean if i have
---TreeviewItem1
---TreeviewItem2
---TreeviewItem3

how shall make it
---TreeviewItem1
---TreeviewItem3
dynamically??

Thanks in advance
Arun

Posted 29-Aug-12 9:19am

arun_pk

Updated 29-Aug-12 11:28am

Christian Amado

v2

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Comments

Kenneth Haugland 29-Aug-12 15:56pm

Can you delete items in the observable collection? Assuming they are binded to the TreeView that should work.

Christian Amado 29-Aug-12 17:26pm

This is very valid way :)

arun_pk 29-Aug-12 23:48pm

Yeah removing will work . But the requirement is to keep the item in collection and make it invisible :(

3 solutions

Solution 3

C#

Response.write("Deepak");

Posted 30-Aug-12 1:16am

Deepak Mehta1

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Christian Amado · Accepted Answer · 2012-08-29T11:23:00

Solution 1

You can add a Converter attached to the Visibility property of your TreeView.

Another way is to delete de item from ObservableCollection as said @Kenneth :)

Converters can slow down your performance when you have many items in your binded element.

Hope you can find it useful :)

Posted 29-Aug-12 11:23am

Christian Amado

Updated 29-Aug-12 11:25am

v2

Comments

arun_pk 29-Aug-12 23:49pm

I am using visibility COnvertor but it still keep a blank treeview item inbetween :(

Christian Amado 29-Aug-12 23:52pm

Are you using hidden or collapsed? You must use collapsed.

arun_pk · Accepted Answer · 2012-08-29T20:11:00

Solution 2

Instead of setting property of Heirecial data template
The Visibility property shall be done for
the

HTML

<treeview.itemcontatinerstyle>
<style>
<setter property="Visibility" value="{Binding  Visibility}">
</setter></style>
</treeview.itemcontatinerstyle>

Posted 29-Aug-12 20:11pm

arun_pk

Updated 29-Aug-12 20:12pm

v2