主题：组合请教

Dim arys() As String = {"1", "2", "3", "4"}

For i As Integer = 0 To arys.Length - 2
    For j As Integer = i+1 To arys.Length - 1
        output.show(arys(i) & "," & arys(j))
    Next
Next

Dim ls As List(Of String) = DataTables("表A").GetValues("单位", "单位 is not null")

For i As Integer = 0 To ls.Count - 2
    For j As Integer = i+1 To ls.Count - 1
        Dim ndr As DataRow = DataTables("表B").AddNew
        ndr("单位组合") = ls(i) & "-" & ls(j)
    Next
Next

Dim ls As List(Of String) = DataTables("表A").GetValues("单位", "单位 is not null")

For i As Integer = 0 To ls.Count - 2
    For j As Integer = i+1 To ls.Count - 1
        Dim ndr As DataRow = DataTables("表B").AddNew
        ndr("单位组合") = ls(i) & "-" & ls(j)
        Dim dr1 As DataRow = DataTables("表A").Find("单位 = '" & ls(i) & "' and 对象 = '" & ls(j) & "'")
        Dim dr2 As DataRow = DataTables("表A").Find("单位 = '" & ls(j) & "' and 对象 = '" & ls(i) & "'")
        ndr("性质1") = dr1("性质")
        ndr("性质1金额") = dr1("金额")
        ndr("性质2") = dr2("性质")
        ndr("性质2金额") = dr2("金额")
    Next
Next