private void OnComponentChanged(object sender, ComponentChangedEventArgs e)
{
MetroSetTabControl parentControl = e.Component as MetroSetTabControl;
if (parentControl != null && e.Member.Name == "TabPages")
{
foreach (DesignerVerb verb in Verbs)
{
if (verb.Text == "Remove Tab")
{
switch (parentControl.TabPages.Count)
{
case 0:
verb.Enabled = false;
break;
default:
verb.Enabled = true;
break;
}
break;
}
}
}
}
/* When the designer modifies the MetroSetTabControl.TabPages collection,
* the Properties window is not updated until the control is deselected and then reselected. To
* correct this defect, you need to explicitly notify the IDE that a change has been made by using
* the PropertyDescriptor for the property. */
private void OnAddTab(Object sender, EventArgs e)
{
MetroSetTabControl parentControl = Control as MetroSetTabControl;
TabControl.TabPageCollection oldTabs = parentControl.TabPages;
// Notify the IDE that the TabPages collection property of the current tab control has changed.
RaiseComponentChanging(TypeDescriptor.GetProperties(parentControl)["TabPages"]);
MetroSetTabPage newTab = (MetroSetTabPage)_designerHost.CreateComponent(typeof(MetroSetTabPage));
newTab.Text = newTab.Name;
parentControl.TabPages.Add(newTab);
parentControl.SelectedTab = newTab;
RaiseComponentChanged(TypeDescriptor.GetProperties(parentControl)["TabPages"], oldTabs, parentControl.TabPages);
}
private void OnRemoveTab(Object sender, EventArgs e)
{
MetroSetTabControl parentControl = Control as MetroSetTabControl;
if (parentControl.SelectedIndex < 0)
{
return;
}
TabControl.TabPageCollection oldTabs = parentControl.TabPages;
// Notify the IDE that the TabPages collection property of the current tab control has changed.
RaiseComponentChanging(TypeDescriptor.GetProperties(parentControl)["TabPages"]);
_designerHost.DestroyComponent(parentControl.SelectedTab);
RaiseComponentChanged(TypeDescriptor.GetProperties(parentControl)["TabPages"], oldTabs, parentControl.TabPages);
}
