主题：判断Table数据是否存在重复值

Dim t2 As Table = e.form.Controls("Table1").Table
Dim ls As new List(Of String)
For Each r2 As Row In t2.Rows
    Dim s = r2("列1") & "|" & r2("列2")
    If ls.contains(s) Then
        msgbox("重复")
        Exit For
    Else
        ls.add(s)
    End If
Next