ClientDataSet1 cannot perform this operation on a closed dataset.錯誤

ClientDataSet1 cannot perform this operation on a closed dataset.錯誤this 程序出現「ClientDataSet1 cannot perform this operation on a closed dataset.」錯誤，經半天的查找，發現是DBCheckbox問題。由於使用了三層結構，想在DBCheckbox出現變更時，就能夠

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