So, the key to modifying a master page is to NOT remove any required ContentPlaceHolder controls.

因 此，修改模板页的关键在于不要删除任何必须的ContentPlaceHolders控件。

youdao

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。

youdao

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。

youdao