主题：[求助]两表判断是否重复添加新表

比如有 表(A ) 表(B ) ,表(C)  想用”表(B)“行 判断 ”表(A)“的数据行是否重复，把表(B)不重复  “表(A)”的行添加到 “表(C)”

Dim Cols1() As String = {"来源列一","来源列二","来源列三"}
Dim Cols2() As String = {"接收列一","接收列二","接收列三"}
For Each dr1 As DataRow In DataTables("表B").Select("")
    Dim dr2 As DataRow = DataTables("表A").find("第一列 = '" & dr1("第一列") & "'")
    If dr2 Is Nothing Then
        dr2 = DataTables("表C").AddNew
        For i As Integer = 0 To Cols1.Length -1
            dr2(Cols2(i)) = dr1(Cols1(i))
        Next
    End If
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