/// <summary>
/// Adding element. Element must comply with the rules, which creator of specific manager created.
/// </summary>
/// <typeparam name="T1"></typeparam>
/// <param name="value"></param>
/// <returns></returns>
public TLimit Add(TLimit val)
{
if (CanAddNull == false && val is null)
{
throw new ArgumentNullException(nameof(val));
}
if (CanAdd(val))
{
List.Add(val);
OnAddElement.Invoke(this, new CollectionActionArgs <TLimit>(CManagerAction.Add, val, this));
return(val);
}
return(null);
}
private void btnAddChild_Click_1(object sender, EventArgs e)
{
OnAddElement?.Invoke(this, new AddEventArgs {
Parent = SelectedObject
});
}
/// <summary>
/// Add element to root
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnAdd_Click(object sender, EventArgs e)
{
OnAddElement?.Invoke(this, new AddEventArgs {
Parent = null
});
}
