由于处理和呈现表达式和其他报表项的顺序，ShellNinja 的建议不能用作可见性表达式.

The suggestion from ShellNinja won't work as a visibility expression because of the order in which expressions and other report items are processed and rendered.

关于 TechNet 提示的文章内置全局变量和用户参考在 RenderFormat 副标题下(尽管是一个非常模糊的提示)，它说:

The article Built-in Globals and Users References on TechNet hints at this (allbeit a very vague hint) under the RenderFormat subheading where it says that:

Globals!RenderFormat.Name 在报表处理/渲染周期的特定部分可用.

Globals!RenderFormat.Name is available during specific parts of the report processing/rendering cycle.

Globals!RenderFormat.Name 在计算表达式之前不会填充，而是在当前渲染请求完成时填充，这就是为什么它不能用于可见性表达式但会显示文本框中的名称.

Globals!RenderFormat.Name is not populated prior to expressions being evaluated, it's populated on completion of the current render request which is why it can't be used in a visibility expression but will display the name in a textbox.

Globals!RenderFormat.IsInteractive 在表达式计算之前填充，并且是在呈现报表之前隐藏/显示报表项的唯一方法.RPL 和 HTML 被认为是完全交互的格式，所有其他格式都不支持或仅支持某些交互功能.可以在文章 Comparing 中找到有关这方面的更多信息TechNet 上不同报表呈现扩展的交互功能.

Globals!RenderFormat.IsInteractive is populated prior to expression evaluation and is the only way of hiding/showing a report item prior to a report being rendered. RPL and HTML are considered fully interactive formats, all other formats are not or only support some interactive features. More information on this can be found in the article Comparing Interactive Functionality for Different Report Rendering Extensions on TechNet.