datagridview checkbox counter

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VB

Hi all!

I'm trying to count the number of the checked checkboxes in the datagridview, but the counter return value is 0.
Can anyone give me a clue why that is so?

Private Sub DataGridView1_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick

        Dim pcount As Integer = 0
        For Each row As DataGridViewRow In DataGridView1.Rows
            If row.Cells(0).Value = True Then
                pcount += 1
            End If
        Next
        Label2.Text = pcount
    End Sub

Thanks!