Expressio表达式 :是一个工作流表达式(workflow expression)。关于这方面的更多信息,请阅读本章稍后讲到的“编辑工作流表达式(Editing Workflow Expressions)”一节。
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定义接口,该接口由为表达式计算提供上下文帧的工作流表达式计算组件实现。
Defines the interface implemented by the workflow expression evaluation component that provides a context frame for expression evaluation.
NET FX 4里的WF包括可组装的工作流style,统一的规则和行为,以及改进的数据绑定、定界和表达式支持。
WF in.net FX 4 includes a composable set of workflow styles, a unification of rules and activities as well as improved data binding, scoping, and expression support.
序列表达式与异步工作流一样,都是计算表达式的示例。
Sequence expressions are an example of a computation expression, as are asynchronous workflows.
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