vb 2005的怪现象

Private Sub 删除行按钮_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 删除行按钮.Click
        If DataGridView1.Rows.Count = 1 Then
            DataGridView1.CurrentCell = DataGridView1(0, cellrow)
        Else
            Me.报单dataset.Tables("差旅单").Rows(DataGridView1.CurrentRow.Index).Delete() '删除datagirdview中指定的行
            Dim srow As Integer
            Dim i As Integer
            srow = DataGridView1.Rows.Count - 1
            For i = 0 To srow - 1
                DataGridView1(0, i).Value = i + 1
                报单BindingSource.EndEdit()
            Next i
        End If
        CurrentcellDirty = True
        GetSumData()
    End Su

执行以上代码时,必需删除一行之后要更新一次数据库,否则就不能删除下一行.

另外执行以下代码
Private Sub 插入新行按钮_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 插入新行按钮.Click
        Dim newrow As DataRow
        newrow = Me.报单dataset.Tables("差旅单").NewRow
        'DataGridView1.CurrentCell = DataGridView1(0, DataGridView1.CurrentRow.Index)
        Me.报单dataset.Tables("差旅单").Rows.InsertAt(newrow, DataGridView1.CurrentRow.Index)
        Dim srow As Integer
        Dim i As Integer
        srow = DataGridView1.Rows.Count - 1
        For i = 0 To srow - 1
            DataGridView1(0, i).Value = i + 1
            DataGridView1.CurrentCell = DataGridView1(0, i)
            报单BindingSource.EndEdit()
        Next i
        CurrentcellDirty = True
        GetSumData()
    End Sub
插入一行后不要更新到数据库,更新时不提示任何错误.
请大家帮看看,急啊

在这里谢谢各位啦!

问题一: 不更新数据库也可以.只需要改变"报单dataset"里面的值就行了.只是删除一行时需要再绑定一次.    (要保存到数据库时需要单独再写个事件)
问题二: 同问题一一样.改变"报单dataset"

版主能否给出具体的代码，小弟不太明白，谢谢啦！

dataset.Tables("差旅单").Rows.Delete();    '删除后,再绑定一次.
如果需要更新到数据中,可以用[url]http://www.wewill.cn/n14236c28.aspx[/url]里面的方法