为什么我会收到InvalidOperationException？

Question

foreach (var shotItem in Invadershots)// it points to me to there and doesnt allow me to loop.."{"Collection was modified; enumeration operation may not execute."}"
{
  shotItem.Move();// it happens when this simple method called (which actually checks some bool..if the shot was out of the winform).
  if (shotItem.removeShot)
  {
        Invadershots.Remove(shotItem);
  }
}

可能是因为我同时更改了列表项吗？
如何防止发生错误？

Answer 1

这是因为您尝试修改集合 Invadershots

Invadershots.Remove(shotItem);

这在foreach中是不允许的,用于代替..