จะถามหน่อยว่า List view เราจะให้ Highlight จำนวนที่น้อยกว่า 1 จะทำยังไงครับ

private void Form1_Load(object sender, EventArgs e)
        {
            for (int i = 1; i < 20; i++)
            {
                dataGridView1.Rows.Add("TOR" + i, new Random().Next(1,10), "Test " + i);
                System.Threading.Thread.Sleep(200);
            }
            for(int i = 0;i<dataGridView1.RowCount-1;i++)
            {
                    if ((int)dataGridView1[1,i].Value <= 3)
                    {
                        dataGridView1.Rows[i].DefaultCellStyle.BackColor = Color.Red;
                    }
                
            }
        }

 For i As Integer = 0 To ListView_tools.Items.Count - 1
            If ListView_tools.Items(i).SubItems(5).Text <> 1 Then
                ListView_tools.Items(i).SubItems(5).BackColor = Color.Red
            End If
        Next

 For i = 0 To dts.Rows.Count - 1
            If dts.Rows(i)(4).ToString = "1" Then
                lvwItem = New ListViewItem(dts.Rows(i).Item("ID").ToString)
                lvwItem.SubItems.Add(dts.Rows(i).Item("Product1").ToString)
                lvwItem.SubItems.Add(dts.Rows(i).Item("Type").ToString)
                lvwItem.SubItems.Add(dts.Rows(i).Item("Total").ToString)
                lvwItem.SubItems.Add(dts.Rows(i).Item("Num").ToString)
                ListView1.Items.Add(lvwItem)
                lvwItem.BackColor = Color.Blue

            Else
                lvwItem = New ListViewItem(dts.Rows(i).Item("ID").ToString)
                lvwItem.SubItems.Add(dts.Rows(i).Item("Product1").ToString)
                lvwItem.SubItems.Add(dts.Rows(i).Item("Type").ToString)
                lvwItem.SubItems.Add(dts.Rows(i).Item("Total").ToString)
                lvwItem.SubItems.Add(dts.Rows(i).Item("Num").ToString)
                ListView1.Items.Add(lvwItem)
            End If
        Next