The only way to pass scope keys across multiple components is through method calls.

跨多个组件传递范围键的惟一方法是通过方法调用。

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You can't access it through a pointer declared as an Order, nor can you pass it to another method expecting an Order as an argument.

您不能通过声明为Order的指针来访问它，您也不能将它传递到另外一个希望以Order作为参数的方法。

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You pass eval the name of the field to evaluate and the method, in turn, determines the current data item and prepares a regular call through DataBinder.Eval.

您将计算的字段名和方法传递给Eval，决定当前的数据项并通过DataBinder . Eval准备一个常规调用。

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