删除前判断行是否被其它表，引用。 - 专家坐堂 - Foxtable(狐表) - 新一代数据库软件，完美融合Access、Foxpro、Excel、vb.net之优势，人人都能掌握的快速软件开发工具!

Dim nm() As String = {"采购进货","销售明细","入库明细"}
Dim nm1() As String = {"采购订单","销售订单","采购入库"}
Dim fdr As DataRow
For i As Integer = 0 To nm.Length-1
    fdr = DataTables(nm(i)).Find("定额编码 = '" & e.DataRow("定额编码") & "' ")
    If fdr IsNot Nothing Then
        Dim result As DialogResult = MessageBox.Show("此材料已被:'"& nm(i) &"' 录入,是否删除对应采购进货明细后再删除本条材料?","提示",MessageBoxButtons.YesNo,MessageBoxIcon.Question)
        If result = dialogresult.no Then
            e.Cancel = True
        Else
            e.Cancel = True
            Forms(nm1(i)).show
        End If
        Exit For
    End If
Next
If fdr Is Nothing Then
    If MessageBox.Show("是否删除本条机具?","提示",MessageBoxButtons.YesNo,MessageBoxIcon.Question) = DialogResult.yes Then
    Else
        e.Cancel = True
    End If
End If

主题：删除前判断行是否被其它表，引用。