问题在于：



AutoEventWireup =" false"



这指示页面不会自动将预定义的函数名列表连接到页面的事件。 Page_Load函数通常会自动连接到page.Load事件，但将此属性设置为false会禁用它。我把它设置为真，我发现它有效...

Phewwwww !!!天啊......你刚刚救了我的一天......

The problem lies here:

AutoEventWireup="false"

This instructs the page to not automatically wire up a predefined list of function names to the page's events. The "Page_Load" function will normally be automatically wired up to the page.Load event, but setting this attribute to false disables it. I Set it to true and I find it works ...
Phewwwww!!! Oh God... You just saved my day...