#7 Scrollbars turn black and become inactive when using textbox

[Anonymous]

Scrollbars turn black and become inactive when using textbox or web browser controls in the columns (subitems)

I haven't looked in details to figure out why, but I'm noticing.

Also, resizing columns doesn't resize the controls in the column. I'l ltake care of it in my own code but that would be good to implement.

[Nobody/Anonymous]

Logged In: NO

I figured out what the problem was:
I had to clear the control at each refresh of the tree, because they weren't getting cleared properly. So initially I used the Controls.Clear() method on the listview control, but that removed all controls including the scrollbars.

To avoid this problem, I changed the code to clear the controls properly as follow:

public void Clear()
{
// _listView.BeginUpdate(); // we don't want this at each loop, so I put it outside the Clear call.

//avoid firing one SelectedItemsChanged event for every selected item
if (_listView.SelectedItems.Count > 0)
_listView.SelectedItems.Clear();

for(int index = 0; index < _data.Count; ++index)
{
ContainerListViewItem item = this[index];

item.Selected = false;
item.Focused = false;
//item.OwnerListView = null; //this is causing the control to be null, and cause trouble at the next call. I am not even sure what what th use here in the first place.

//added
//Looping through all the items of the tree, which wasn't done: only 1st level of the tree was cleared, leaving control in subtree items in place.
if (item.Items.Count > 0)
{
item.Items.Clear();
}
//end added

for(int subIndex = 0; subIndex < item.SubItems.Count; ++subIndex)
{
if (item.SubItems[subIndex].ItemControl != null)
{
//item.SubItems[subIndex].ItemControl.Parent = null;
//item.SubItems[subIndex].ItemControl.Visible = false;
//added
item.SubItems[subIndex].ItemControl.Dispose();
//Dispose of the control instead of making the control link null: that actually clears the control, not just hide it.
//end added
}
}
}
_data.Clear();

// _listView.EndUpdate();
}