在切换回“源”视图时，设计时控件仍保持为标记源代码，并被编辑到网页的标记中。

When you switch back to source view, the design-time control is persisted to the markup source code and edited into the markup for the Web page.

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在图3中你可以看到快捷菜单控件在设计时的呈现。

In Figure 3, you see the ContextMenu control rendered at design time.

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当用户右键单击设计图面上的选项卡控件时，设计时环境将调用IMenuCommandService上的ShowContextMenu方法(请参见图11)。

When a user right-clicks a TAB control on the design surface, the design-time environment calls the ShowContextMenu method on the IMenuCommandService (see Figure 11).

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