[C#] จะเก็บค่าจาก serial port RS-232 ลงใน array ยังไงคะ???

        ArrayList objArrList;
        int i;

        objArrList = new ArrayList();

        objArrList.Add("white");
        objArrList.Add("black");
        objArrList.Add("red");
        objArrList.Add("yellow");
        objArrList.Add("green");

        for(i = 0; i <= objArrList.Count - 1; i++)
		{
			this.lblText.Text = this.lblText.Text +  objArrList[i] + "<br>";
        }

int[] p = new int[0];
            Array.Resize(ref p, p.Length + 1);

            for (int i = 0; i < p.Length; i++)
            {
                p[i] = i++;
            }

 
  Dim Data_IN As New ArrayList
 Private Sub SerialPort1_DataReceived(ByVal sender As Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) Handles SerialPort1.DataReceived
       
             Dim val_read As String = SerialPort1.ReadLine.ToString().Trim()    
            Data_IN.Add(val_read)
            

    End Sub