Dim Cols1() As String = {"第一列","第二列","第三列"} Dim Cols2() As String = {"第一列","第二列","第三列"} For Each dr1 As DataRow In DataTables("表A").Select("") Dim dr2 As DataRow = DataTables("表B").Find("第一列 = '" & dr1("第一列") & "' and 第二列 = '" & dr1("第二列") & "' and 第三列 = '" & dr1("第三列") & "'") If dr2 Is Nothing Then dr2 = DataTables("表B").AddNew() For i As Integer = 0 To Cols1.Length -1 dr2(Cols2(i)) = dr1(Cols1(i)) Next End If Next
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