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//IEnumerable<DataRow> QOld = vDTOld.AsEnumerable().ToList();
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//IEnumerable<DataRow> QJJ = vDTOld.AsEnumerable().Intersect(DTNew.AsEnumerable(), DataRowComparer.Default);
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//DataTable DTJJ = QJJ.CopyToDataTable();


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//IEnumerable<DataRow> QCJ = vDTOld.AsEnumerable().Except(DTNew.AsEnumerable(), DataRowComparer.Default);
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//DataTable DTCJ = QCJ.CopyToDataTable();


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IEnumerable<DataRow> QBJ = vDTOld.AsEnumerable().Union(DTNew.AsEnumerable(), DataRowComparer.Default);
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DataTable DTBJ = QBJ.CopyToDataTable();

תÔØÓÚ:https://my.oschina.net/u/2446847/blog/1536269