The following example declares a variable to hold an array of arrays of arrays an array , each element of which is an array , each element of which is an array , with the innermost array having elements of the 下面的示例声明一个变量，它存储一个嵌套数组（一种数组，其中每一级数组的每个元素都是一个数组） ，最里面的数组包含
The general rule for how events are raised is that the initialization events are raised from the innermost control to the outermost one , and all other events are raised from the outermost control to the innermost one 引发事件的一般规则是初始化事件从最里面的控件向最外面的控件引发，所有其他事件则从最外面的控件向最里面的控件引发。
