主题：[求助]合并数据

Dim s1 As String = sheet(n,0).Text
Dim s2 As String = sheet(n,1).Text
Dim s3 As String = sheet(n,2).Text

If DataTables("订单").Find("编号 = '" & s1 & "' and 产品 = '" & s2 & "' and 数量 = '" & s3 & "'") Is Nothing Then '如果不存在同编号的订单