添加项目时防止ListView调整窗口大小WPF / C＃

I have a ListView in WPF that is resizing my entire application window whenever I add items to it. I have the ListView size bound to the grid it is in, which is bound to the window size. So when the user resizes the window, the ListView grows. The problem is that when I add items to the ListView, it automatically stretches to try to fit the new content, which in turn stretches the size of the entire window.I have a ListView in WPF that is resizing my en