public void DisplayUpdate(Task task)
{
var taskEntry = Locate_task_entry(task.Id);
if (!Try_update_existing())
{
Add_new();
}
Embelish_item(taskEntry.item, task);
bool Try_update_existing()
{
if (taskEntry.item == null)
{
return(false);
}
var currentItemIndex = _lstTasks.CurrentItemIndex;
_lstTasks.RemoveAt(taskEntry.index);
taskEntry.item = new Listbox.Item(Format_task_info(task));
_lstTasks.Insert(taskEntry.index, taskEntry.item);
_lstTasks.CurrentItemIndex = currentItemIndex;
return(true);
}
void Add_new()
{
taskEntry.item = _lstTasks.Add(Format_task_info(task));
_lstTasks.CurrentItemIndex = _lstTasks.Items.Length - 1;
}
}
