private void InsertBlock()
{
//Create
Block tagBlock = TagField.Create();
TagField.BlockList.Insert(selectedBlockIndex, tagBlock);
BlockList.Insert(selectedBlockIndex, new TagBlockModel()
{
Owner = Owner, TagBlock = tagBlock
});
//Notify Changes
NotifyPropertyChanged(nameof(HasBlocks));
//Set
SelectedBlockIndex = TagField.BlockList.IndexOf(tagBlock);
NotifyValueChanged();
}