VB.NET Gridview and Timer

Question

So I'm working on simple project, still new to coding but I'm learning day after day I'm trying pretty much to do like a Task Reminder thingy: Main Idea: using gridview columns to add time (as shown) and when it hits the label time (which I'm already using timer on) will do a notify or msgbox

main idea img

Label Time Code:

Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
        Label33.Text = TimeOfDay.ToString("hh:mm:ss tt")
    End Sub

Regarding the gridview I searched a lot about it, I was working on a ListView and that was my main code but it didn't work:

Private Sub Button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button7.Click
        Dim Item As New ListViewItem(TextBox16.Text)
        Dim messagetime As String
        Item.SubItems.Add(MaskedTextBox1.Text)
        Item.SubItems.Add(TextBox18.Text + ComboBox6.Text)
        ListView1.Items.Add(Item)
        messagetime = MaskedTextBox1.Text + ComboBox6.Text
        If ListView1.Items(0).SubItems(2).Text = Label33.Text Then
            MsgBox(TextBox16.Text + "  " + TextBox18.Text)
        End If
    End Sub

But now I'm using gridview, when label time comes to the 2nd column time it should do notify or a msgbox written inside of it for example "Don't forget to call Seller Name"

Thank you so much in advance