solution1.Check whether the primary key of the datatable is added
add primary key
right click the column,set primary key,then double check(right click the column,Edit Key,make sure the primary key is ticked)
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solution1.Check whether the primary key of the datatable is added
add primary key
right click the column,set primary key,then double check(right click the column,Edit Key,make sure the primary key is ticked)
转载于:https://www.cnblogs.com/jinxinhelloworld/p/3324100.html