Dim i As Integer = DataGridView1.Rows.Count - 1

For irow = 0 To DataGridView1.Rows.Count - 1

            ' if Row is Selete Check Box is Delete row
            If DataGridView1.Rows.Item(i).Cells(0).Value = True Then

                DataGridView1.Rows.RemoveAt(i)

            End If
            i -= 1

Next