In order to build the WHERE part of the DeleteCommand, you need to obtain the value of the key field for the current row.
为了构建DeleteCommand的WHERE部分，您需要获取当前行的关键字段值。
In order to build the WHERE part of the DeleteCommand, you need to obtain the value of the key field for the current row.
为了构建DeleteCommand的WHERE部分，您需要获取当前行的关键字段值。
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