针对伺服端程序码，网页左上方的下拉式清单会显示可撰写程序码的伺服器控制项。
For server code, the drop-down list at the top-left of the page displays the server controls for which you can write code.
按钮控制项可以同时引发伺服器和用户端事件。
Button controls can raise both server events and client events.
NET伺服器控制项设为略过伺服器和用户端的验证，或只略过用户端的验证。
NET server control to bypass validation on both the server and the client, or just on the client.
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