I can not read XML RSS

• • Reply
  

  ardilo

  Member

  33 Points

  99 Posts

  I can not read XML

  Dec 23, 2012 06:51 PM|LINK

  Dear friends,

  I palced a XML file into my website and tried to read XML from my another website/local. It worked first, but then suddenly I received an error saying "Object reference not set to instance of an object" and could not solve the problem. 

  Maybe, I miss an important point or because of my settings of my website holding XML file.

  I've posted XML and the code-block below.

  Thanks for your support in advance.

  Regards,

  <rss version="2.0">
  <channel>
  	    <title>Rss başlığı</title>
  	    <link>Rss adresi</link>
  	    <description>Rss içerik</description>
  	   
   <item><title>dede</title></item>
   <item><title>localhost</title></item>
   <item><title>www</title></item>
  </channel>
  </rss>

  Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
          If Not Page.IsPostBack Then
              Dim okuyucu As XmlTextReader = New XmlTextReader("http://www.....net/check.xml")
              Dim dokuman As XmlDocument = New XmlDocument()
              dokuman.Load(okuyucu)
  
              Dim rss As XmlNode = dokuman.SelectSingleNode("/rss")
              Dim title As XmlNodeList = dokuman.SelectNodes("/rss/channel/item/title")
  
              Dim tablo As DataTable = New DataTable()
              Dim satır As DataRow
              tablo.Columns.Add(New DataColumn("Başlıklar"))
  
              Dim i As Integer
  
              Dim mySonuc As Integer = 0
              For i = 0 To 5 - 1 Step i + 1
                  satır = tablo.NewRow()
                  satır(0) = title.Item(i).InnerText.ToString()
                  tablo.Rows.Add(satır)
                
              Next
              GridView1.DataSource = tablo
              GridView1.DataBind()
  
          End If
      End Sub

  
  
  
  

• • Reply
  

  Primillo

  Star

  8725 Points

  1678 Posts

  Re: I can not read XML

  Dec 23, 2012 07:11 PM|LINK

  Check out this starter kit, use XML as data store

  http://www.asp.net/downloads/starter-kits/small-business

  Best Regards
  Primillo
  http://www.facebook.com/programandopuntonet
• • Reply
  

  PrashanthRed...

  Member

  559 Points

  94 Posts

  Re: I can not read XML

  Dec 28, 2012 11:48 PM|LINK

  Hi,

  Specified xPath "rss/channel/item/title" has only 3 nodes in your xml and you are trying to iterate more than 3 times. Thats why Object reference error is raised.

  Replace for loop in your code with below one

  Dim mySonuc As Integer = 0
              For i = 0 To title.Count-1 Step i + 1
                  satır = tablo.NewRow()
                  satır(0) = title.Item(i).InnerText.ToString()
                  tablo.Rows.Add(satır)
                 
              Next

  Please Mark as Answer if my post helps you..!
  
  Thanks,
  Prashanth Reddy
  
  • Marked as answer by decker dong - msft on Dec 29, 2012 04:24 AM