LINQ 组重复行并删除除第一行之外的所有行

Question

我在 stackoverflow 上的一个问题中找到了以下 LINQ 代码，我想用它来删除数据表中的重复行并保留索引最少的行，这是代码，我想不出来在注释行中添加要添加的代码

    Dim duplicates = From row In GoogleResults.AsEnumerable()
           Let seller = row.Field(Of String)("Seller")
           Group row By seller Into DuplicateSellers = Group
           Where DuplicateSellers.Count() > 1
           Select DuplicateSellers
            For Each DuplicateSellerRows In duplicates
                For Each row In DuplicateSellerRows
                    'remove current row, but skip the first one
'row.Delete() will remove all rows but how can i keep the first one?
                Next
            Next

Answer 1

您可以使用Skip() 跳过每组重复项中的第一行：

For Each DuplicateSellerRows In duplicates
    For Each row In DuplicateSellerRows.Skip(1)            
        row.Delete() 
    Next
Next