如何获得SelectdValue像一个简单的组合框，但datagridviewCombobox使用行索引（dataGridView已满）（VB.net）
我尝试了一个代码，这工作很好，但我不知道如何使用它在按钮点击事件的代码：

Private Sub dgvSampleList_EditingControlShowing(ByVal sender As Object, ByVal e As DataGridViewEditingControlShowingEventArgs) Handles dgvSampleList.EditingControlShowing
    Dim comboBox As ComboBox = CType(e.Control, ComboBox)

    If (comboBox IsNot Nothing) Then
        'Remove an existing event-handler
        RemoveHandler comboBox.SelectedIndexChanged, New EventHandler(AddressOf ComboBox_SelectedIndexChanged)

        'Add the event handler. 
        AddHandler comboBox.SelectedIndexChanged, New EventHandler(AddressOf ComboBox_SelectedIndexChanged)
    End If
End Sub

Private Sub ComboBox_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs)
    Dim comboBox As ComboBox = CType(sender, ComboBox)
    'Display selected value
    MsgBox("ProgramID: " & comboBox.SelectedValue.ToString)
End Sub

this ComboBox从数据库获取信息代码：

fill.filldata_cb("fillDataProduct", Product_Name)
Product_Name.DisplayMember = "Product"
Product_Name.ValueMember = "ID"

DataGridViewComboBox命名为Product_Name，我从数据库中获取数据，使用SQL Server的存储过程和函数读取存储过程并给予所需的参数。我只是想获取与DataGridViewComboBox中所选项目相关的值成员