XML in Visual Basic reading multiple lines

So I am trying to work with a XML file and reading lines from it. An extract of it is here:

<Door Id="pce.car01-L1" In="0" Out="0" Err="0" /> <Door Id="pce.car01-R1" In="0" Out="0" Err="1" /> <Door Id="pce.car01-L2" In="0" Out="0" Err="0" />

I currently have the code below:

Dim doc As New XmlDocument

    Dim root As XmlNode = doc.DocumentElement

    Dim stopdata As XmlNode = root.SelectSingleNode("/Header/Stop")
    Dim doordata(6) As XmlNode
    doordata(1) = root.SelectSingleNode("/Header/Stop/Doors/Door")

    Stopnumber = stopdata.Attributes.ItemOf("Id").InnerText


        stops(0) = stopdata.Attributes.ItemOf("Id").InnerText
        stops(1) = stopdata.Attributes.ItemOf("ArrivalT").InnerText
        stops(2) = stopdata.Attributes.ItemOf("DepartureT").InnerText
        doors(0, 0) = doordata(1).Attributes.ItemOf("Id").InnerText
        doors(1, 0) = doordata(1).Attributes.ItemOf("In").InnerText
        doors(2, 0) = doordata(1).Attributes.ItemOf("Out").InnerText
        doors(3, 0) = doordata(1).Attributes.ItemOf("Err").InnerText

this is only a part of the big file of code.this code saves the data in ID = pce.car01-L1. I need it to read the data for pce.car01-R1 and save it in the array's next column. Can you please help me as to how to get it to read the next attribute of a XML file too?

Regards