the horizontal scrollbar is always there in the treeview box. how can I hide it?

thanks for any tips!

Cyrus,
it depends on the version.
Both in 2003 and 2005, you always get an horizontal (or vertical) scrollbar if your content exceeds the width of the control. You can eliminate the behaviour by setting the Scrollable property to false, but this will make both the horizontal and vertical scrollbar disappear, which might not be what you want.

In Visual Studio 2003, there was a strange bug, that would make the horizontal scroll bar appear (and without the visual styles..) regardless of what was shown on the screen. The problem usually goes away if you resize the treeview, as this apparently forces the control to reevaluate the need of the scroll bar.
The hack is obvious (and ugly), but works:

In your Form_Load:
...
int size = treeView1.Width;
treeView1.Width = 0;
Application.DoEvents ();
treeView1.Width = size;
...

HTH
--mc

Dear MC,

Thanks a lot for your reply... I also found other solutions on the web after inputting the right key word on Google. Most of the solutions are to add the tree nodes in Form_Load() and the horizontal scroll bar will disappear. And it works for me.

However, I experienced another problem. After the tree has been built, I expandAll() and display the checkbox in each node, and then I collapseAll()...... God... the horizontal scrollbar shows up again......

any idea?

Further findings....

in my VS2003

the following code just works.... and you can put them anywhere you want to make the H scroll bar disappear.


int size = this.treeView1.Width;
this.treeView1.Width = 0;
this.treeView1.Width = size;