Tip 10-server Control View state.
技巧10—服务器控件视图状态。
In addition, it forces you to have an extra server control defined on the page.
另外,你必须在页面上定义一个额外的服务器控件。
When you find a ContentPlaceHolder control (or a server control) cut and paste it into that hidden panel.
每找到一个ContentPlaceHolders控件(或者一个服务器控件),剪切并粘贴到刚刚添加的隐藏面板中。
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