public void Undock()
{
_appbarEdge = appbar.ABEdge.None;
appbar.AppBarFunctions.SetAppBar(this, _appbarEdge, topMost: false);
}
public void DockBottom()
{
_appbarEdge = appbar.ABEdge.Bottom;
appbar.AppBarFunctions.SetAppBar(this, _appbarEdge, topMost: false);
}