主题：关于获取最后一行

 For i As Integer = CurrentTable.BottomPosition To CurrentTable.TopPosition Step -1
        CurrentTable.Rows(i).Delete
        drTemp = CurrentTable.Rows(i)
    Next 
我知道这段代码是实现删除最后一行，有人能解释下原理吗？

还有一个问题是我如何获得这行？因为我删除之前需要把级联信息删除，

两个问题啊，求答复

Dim Result As DialogResult
Result = MessageBox.Show("确定要删除该条记录?", "提示", MessageBoxButtons.YesNo)
Dim dr As DataRow
Dim drTemp As Row
Dim i As Integer
If Result = DialogResult.Yes Then
    For i  = CurrentTable.BottomPosition To CurrentTable.TopPosition Step -1
drTemp = CurrentTable.Rows(i)
        CurrentTable.Rows(i).Delete
    Next