protected sealed override void OnBeforeSelect(MultiSelectTreeViewCancelEventArgs e)
{
VirtualTreeNode node = (VirtualTreeNode)e.Node;
VirtualTreeViewCancelEventArgs args = new VirtualTreeViewCancelEventArgs(node, e.Cancel, e.Action);
OnBeforeSelect(args);
e.Cancel = args.Cancel;
}
protected virtual void OnBeforeSelect(MultiSelectTreeViewCancelEventArgs e)
{
EventHandler <MultiSelectTreeViewCancelEventArgs> handler = BeforeSelect;
if (handler != null)
{
handler(this, e);
}
}
private bool SelectNode(MultiSelectTreeNode node, bool select, TreeViewAction tva)
{
bool selected = false;
if (node == null)
{
return(false);
}
if (select)
{
if (!IsNodeSelected(node))
{
MultiSelectTreeViewCancelEventArgs e = new MultiSelectTreeViewCancelEventArgs(node, false, tva);
OnBeforeSelect(e);
if (e.Cancel)
{
return(false);
}
_selectedNodes.Add(node);
selected = true;
_selectionChanged = true;
OnAfterSelect(new TreeViewEventArgs(node, tva));
}
_mostRecentSelectedNode = node;
return(selected);
}
if (IsNodeSelected(node))
{
OnBeforeDeselect(new TreeViewEventArgs(node));
_selectedNodes.Remove(node);
_selectionChanged = true;
OnAfterDeselect(new TreeViewEventArgs(node));
}
return(selected);
}
protected sealed override void OnBeforeSelect(MultiSelectTreeViewCancelEventArgs e)
{
VirtualTreeNode node = (VirtualTreeNode)e.Node;
VirtualTreeViewCancelEventArgs args = new VirtualTreeViewCancelEventArgs(node, e.Cancel, e.Action);
OnBeforeSelect(args);
e.Cancel = args.Cancel;
}
private bool SelectNode(MultiSelectTreeNode node, bool select, TreeViewAction tva)
{
bool selected = false;
if (node == null)
{
return false;
}
if (select)
{
if (!IsNodeSelected(node))
{
MultiSelectTreeViewCancelEventArgs e = new MultiSelectTreeViewCancelEventArgs(node, false, tva);
OnBeforeSelect(e);
if (e.Cancel)
{
return false;
}
_selectedNodes.Add(node);
selected = true;
_selectionChanged = true;
OnAfterSelect(new TreeViewEventArgs(node, tva));
}
_mostRecentSelectedNode = node;
return selected;
}
if (IsNodeSelected(node))
{
OnBeforeDeselect(new TreeViewEventArgs(node));
_selectedNodes.Remove(node);
_selectionChanged = true;
OnAfterDeselect(new TreeViewEventArgs(node));
}
return selected;
}
protected virtual void OnBeforeSelect(MultiSelectTreeViewCancelEventArgs e)
{
EventHandler<MultiSelectTreeViewCancelEventArgs> handler = BeforeSelect;
if (handler != null)
{
handler(this, e);
}
}
