Typically this node allows the incoming message to be routed based on its content, where XPath is used as the expression language to query the content (message processing routing language).

通常，该节点允许根据内容路由输入消息，其中使用XPath作为表达式语言来查询内容(消息处理路由语言)。

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Now Microsoft have added better support for using the engine in ASP.NET WebForms 4.0 by using expression builders enabling bi-directional routing.

现在微软已经在ASP.NET WebForms 4.0中增加了对Routing引擎更好的支持，它使用表达式构造器进行双向Routing。

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The regular expression argument is the routing mechanism.

正则表达式参数是路由机制。

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