与代表创建的区别

Question

我正在编写简单的动态gui按钮代码，我想知道1.和2.代码之间的区别（第一个工作错误，第二个很好）

AddGUIMenuEntry（...） - 第二个参数是按钮文本，第三个是按下按钮时将被调用的委托

容器是一个类

有两段代码：

1

foreach(var c in StandsManager.instance.containers) //array with Container objects with id 0 and 1
{
  ProductsManager.instance.AddGUIMenuEntry(gui, "Spawn " + c.id.ToString(), //adds GUI button with text "Spawn 0" for first object and "Spawn 1" for second
    () =>
    {
      StandsManager.instance.CreateContainer(c.id, this); //click first and second button do the same - they create Container with id 1 - wrong
    }
  );
}

2

for(int i = 0; i < StandsManager.instance.containers.Length; i++) 
{
  Container c = StandsManager.instance.containers[i];
  ProductsManager.instance.AddGUIMenuEntry(gui, "Spawn " + c.id.ToString(), 
    () =>
    {
      StandsManager.instance.CreateContainer(c.id, this); //pressing first creates Container with id 0, pressing second creates Container with id 1 - good
    }
  );
}

我想这与变量范围有关。