The programmatic ID of the input control that the validation control will evaluate.

验证控件将计算的输入控件的编程 ID。

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A fully programmatic implementation is based on an assignment handler 6, which allows a task to find the user ID, based on the on arbitrary calculations.

完整的编程实现是基于分配处理器(assignment handler)的6，它允许任务根据任意的计算规则去查找用户ID。

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