You have to add an operation before you can add its binding definition.

在添加它的绑定定义之前，您需要添加一个操作。

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At the most basic level, the Binding operation stands out as the most important of the three.

从最基础的层次上来看，绑定操作是三者中最重要的。

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You can select from many options for client programming based on your unique business requirements: interaction style, operation type, binding type to name a few.

您可以基于您独特的业务需求从客户端编程的许多选项中进行选择：交互样式、操作类型和绑定类型（仅举几个例子）。

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