在数据绑定datagridview vb.net中添加未绑定的更新和删除按钮

Question

我有一个数据绑定的datagridview，我想添加更新和删除按钮，这将打开另一个包含需要更新的记录的表单。 datagrid就是这样的

    conn = New MySqlConnection
    conn.ConnectionString = "server=localhost;userid=root;password=root;database=test"
    Dim sda As New MySqlDataAdapter
    Dim dbDataset As New DataSet
    Dim bsource As New BindingSource

    Try
        conn.Open()
        Dim query As String
        query = "select user_id as 'ID', lname as 'Lastname', fname as 'Firstname' from test.user"
        comm = New MySqlCommand(query, conn)
        sda.SelectCommand = comm
        sda.Fill(dbDataset)
        bsource.DataSource = dbDataset
        userDatagridview.DataSource = bsource
        sda.Update(dbDataset)
        conn.Close()
    Catch ex As MySqlException
        MessageBox.Show(ex.Message)
    Finally
        conn.Dispose()
    End Try