DataGridView 动态改变单元格类型时 SetCurrentCellAddressCore

Public Class Form1

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    Dim col(3) As DataGridViewTextBoxColumn
    For i = 0 To 3
        col(i) = New DataGridViewTextBoxColumn
        col(i).Name = "col" & i.ToString
    Next
    dgv.Columns.AddRange(col(0), col(1), col(2), col(3))
    dgv.Rows.Add(20)
End Sub

Private Sub dgv_CellEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles dgv.CellEnter
    Dim r As Integer = e.RowIndex
    Dim c As Integer = e.ColumnIndex
    Dim v As String = dgv.Rows(r).Cells(c).Value

    If c = 3 Then
        dgv.Rows(r).Cells(c) = CreatComCell(v)  '这里报错 "操作无效，原因是它导致对 SetCurrentCellAddressCore 函数的可重入调用"
    End If
End Sub

Private Function CreatComCell(ByVal v As String) As DataGridViewComboBoxCell
    Dim cell As New DataGridViewComboBoxCell
    cell.Items.AddRange("无权", "一级", "二级", "三级")
    cell.Value = v
    cell.DropDownWidth = 80
    Return cell
End Function

End Class

这个错误会在行和列为同一值时出现，例如当C=3时，若行(R)也为3时，就会出错，若将C改为2时，当行(R)也为2时，就会报错，以此类推，否则就不会出现问题。求大神帮忙看看。

自己解决了 虽然不知道原因。
将CellEnter事件中的代码放到CellBeginEdit事件中就好了。。。