Dim s2 As Date = Date.Now() Dim Les As List(Of String) = DataTables("test").GetUniqueValues("[第三列] is not null","第二列") For Each Le As String In Les Dim drs As List(Of DataRow) = DataTables("test").Select("[第二列] = " & Le) For n As Integer = 0 To drs.Count - 1 If n > 0 Then drs(n)("第三列") = drs(n-1)("第三列") End If Next
Next Output.Show("处理完毕! 耗时: " & (Date.Now -s2).TotalSeconds)