Display xml string on asp.net webpage

Question

1.00/5 (1 vote)

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My goal is display xml string method onto the current page. I am currently using the page_load method to render the XML string but using this method, I am currently experiencing a blank web page. Is their a better approach to use, in order to solve this problem. Please advise further.

Updated Code V2:

C#

if (!IsPostBack)
        {
          //  string a = createXMLPub(data);
         //   Label1.Text = a;
            
            createXML(data);

           // string a = createXMLPub(data);
          //  XmlDocument xml = new XmlDocument();
          //  xml.LoadXml(a);
           // Response.Write(xml.OuterXml);
          //  format_dvi.InnerText = xml.OuterXml;

          //  Response.Clear();
         //   string a = createXML(data);
         //   XmlDocument xml = new XmlDocument();
         //   xml.LoadXml(a);
         //   Response.ContentType = "text/xml";
         //   Response.Write(xml.OuterXml);
         //   Response.End();
        }
		
	public void createXML(string data)
    {
        string a = createXMLPub(data);
        XDocument xDoc = new XDocument(a);
        Label1.Text = a;
        XDocument.Parse(a);
        try
        {
            xDoc = XDocument.Load(data);
        
        }
        catch (Exception ex)
        {
            Label1.Text = ex.ToString();
            return;
        }
    }

C#

public static string createXMLPub(string data )
    {
        XElement xeRoot = new XElement("pub");
        XElement xeName = new XElement("name", "###");
        xeRoot.Add(xeName);
        XElement xeCategory = new XElement("category", "#####");
        xeRoot.Add(xeCategory);
		XDocument xDoc = new XDocument(xeRoot);
        //xDoc.Save(Server.MapPath("products-string2.xml"));
        //Response.Redirect("products-string2.xml");//load web browser
        //return xDoc;
        data = xDoc.ToString();
        return data;
    }

Thank you

Posted 9-Sep-14 1:14am

miss786

Updated 9-Sep-14 5:43am

v4

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Comments

Sinisa Hajnal 9-Sep-14 7:17am

What do you mean it does not allow you to debug?!

Also, do you need to redirect or you can just show the xml on the current page. And why?

miss786 9-Sep-14 7:22am

Thank you for your reply. I am trying to show it on the current page. Would LoadXML property work here?

[no name] 9-Sep-14 7:34am

It's most likely not allowing you to debug it because your code will not compile.

5 solutions

Solution 1

You can use XmlTextReader. It is simple.

C#

xml.InnerText = "";
    XmlTextReader xlRead = new XmlTextReader(Server.MapPath("library.xml"));

    while (xlRead.Read())
    {
        xlRead.MoveToElement();

        div_xml.InnerHtml = div_xml.InnerHtml + "<br />" + xlRead.Name + " " + xlRead.Value;
    }

Read XML using Asp.Net XmlTextReader

Posted 9-Sep-14 1:20am

Arun Banik

Updated 9-Sep-14 1:21am

v2

Solution 2

If you're trying to show whole XML (as opposed to its data) just use XmlDocument

C#

protected void Page_Load(object sender, EventArgs e, string data)
    {
        if (!IsPostBack)
  

XmlDocument xml = new XmlDocument;
xml.LoadXml(data);
your_div.InnerText = xml.OuterXml;
      }

Where your_div is some div with runat="server" on your page

You could get the same with

Response.Write(xml.OuterXml) but you wouldn't have any control on where it would render.

Posted 9-Sep-14 1:29am

Sinisa Hajnal

Comments

miss786 9-Sep-14 7:49am

Hi, Thank you very much for your approach. I followed you guide but I am still experiencing a blank page.
string a = createXMLPub(data);
XmlDocument xml = new XmlDocument();
// xml.LoadXml(a);
// Response.Write(xml.OuterXml);
// format_dvi.InnerText = xml.OuterXml;

However, I tried creating try and catch method and calling that in the page load, however that also is showing blank page.
public void createXML(string data)
{
string a = createXMLPub(data);
XDocument xDoc = new XDocument(a);
try
{
xDoc = XDocument.Load(Server.MapPath("xml/products-string2.xml"));
// xDoc.Load(path + "products-string2.xml");
}
catch (Exception ex)
{
Label1.Text = ex.ToString();
return;
}

Response.Redirect("products-string2.xml");//load web browser

}

Please advice further.

Sinisa Hajnal 9-Sep-14 7:53am

Remove response.redirect, data maybe loads, but you immediately redirect to another page. It does not load web browser, it simply sends your browser to another link. Browser will show the page after Page_Load finishes without you having to call anything.

Solution 5

Dear all,

Thank you so much for contributing your solutions to this issue. I really appreciate your time and thoughtful solutions, especially Richard & Raju.

From Richard's recent suggestion, I manage to find my control label tag, was getting render as hidden, hence I used a

FindControl() method

, in my aspx page. I also found, my main method 'CreateXMLPub', was calling extra null string parameter, which I edited to the following below and was able to render the xml to my label successfully.

C#

Protected void Page_Load(object sender, EventArgs e)
        {
            string pub = createXMLPub();
            Label2.Text = Server.HtmlEncode(pub);
        }



public static string createXMLPub()
    {
        XElement xeRoot = new XElement("pub");
        XElement xeName = new XElement("name", "###");
        xeRoot.Add(xeName);
        XElement xeCategory = new XElement("category", "#####");
        xeRoot.Add(xeCategory);
		XDocument xDoc = new XDocument(xeRoot);
        data = xDoc.ToString();
        return data;
    }

Many thanks for all your help and time. :)

Posted 22-Sep-14 1:19am

miss786

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raju melveetilpurayil · Accepted Answer · 2014-09-09T02:10:00

It will display xml in current page, but will clear all other content..
Only display a XML Document

C#

protected void Page_Load(object sender, EventArgs e)
        {
            //Clear page
            Response.Clear();
            XmlDocument xml = new XmlDocument();
            xml.Load(Server.MapPath("products-string2.xml"));
            Response.ContentType = "text/xml";
            Response.Write(xml.OuterXml);
            Response.End();
        }

Version 2

As per your update I created the same XML from here

C#

protected void Page_Load(object sender, EventArgs e)
        {
            
            
            Response.Clear();
            string data = string.Empty;
            XElement xeRoot = new XElement("pub");
            XElement xeName = new XElement("name", "Test Name");
            xeRoot.Add(xeName);
            XElement xeCategory = new XElement("category", "Test Category");
            xeRoot.Add(xeCategory);
            XDocument xDoc = new XDocument(xeRoot);
            data = xDoc.ToString();
            
            //Clear page
            Response.ContentType = "text/xml";
            Response.Write(data);
            Response.End();
        }

Its giving me a XML

XML

<pub>
  <name>Test Name</name>
  <category>Test Category</category>
</pub>

Version 3

I don't know what you passing to the function createXMLPub
you can also put some brakpoint to debug..

C#

protected void Page_Load(object sender, EventArgs e)
        {
            Response.Clear();
            string data = createXMLPub(string.Empty);
            //Clear page
            Response.ContentType = "text/xml";
            Response.Write(data);
            Response.End();
        }

        public string createXMLPub(string data)
        {
            XElement xeRoot = new XElement("pub");
            XElement xeName = new XElement("name", "Test Name");
            xeRoot.Add(xeName);
            XElement xeCategory = new XElement("category", "Test Category");
            xeRoot.Add(xeCategory);
            XDocument xDoc = new XDocument(xeRoot);
            data = xDoc.ToString();
            return data;
        }

Richard Deeming · Accepted Answer · 2014-09-09T05:29:00

Solution 4

Try this:

C#

public void createXML(string data)
{
    string a = createXMLPub(data);
    Label1.Text = HttpUtility.HtmlEncode(a);
}

The reason you're getting a blank page is most likely that the browser is interpreting the XML tags as unknown HTML tags.

Posted 9-Sep-14 5:29am

Richard Deeming

Comments

miss786 9-Sep-14 11:46am

Dear Richard, Thank you for your solution input. I am sorry to inform, I was unable to get your approach to work. Do I need to add extra properties to the label tag in my HTML;

<form id="form1" runat="server">
<div id="format_dvi" runat="server">
<asp:label ID="Label1" runat="server" >
</div>
</form>

Thank you

Richard Deeming 9-Sep-14 11:48am

Assuming the label tag is actually closed (either <asp:Label ... /> or <asp:Label ...></asp:Label>), there's nothing wrong with the markup.

What error do you get?

miss786 9-Sep-14 11:53am

I am not getting no errors, just blank page. I tried to debug the page_load method, which calls the createXML(), but it does not show the local variable window, hence I am assuming my approach to call the createXML() in the page_load method, maybe incorrect.

Please advice, further if possible. Many thanks.

Richard Deeming 9-Sep-14 12:05pm

"window" is a client-side variable, so it won't be available from server-side code.

What happens if you change the createXML method to just: Label1.Text = "createXML"; - do you still get a blank page?

miss786 9-Sep-14 12:10pm

I see. Sadly still no luck with your above suggestion.

public void createXML(string data)
{
// string a = createXMLPub(data);
// Label1.Text = HttpUtility.HtmlEncode(a);
Label1.Text = "createXML";
}

if (!IsPostBack)
{
// string a = createXMLPub(data);
// Label1.Text = a;

createXML2(data);
}

Thanks for reply.

Richard Deeming 9-Sep-14 12:15pm

You're calling a method called createXML2, but modifying a method called createXML. Is that a typo in your comment?

If you're still getting a blank page after setting Label1.Text to a simple string, then either something else is changing the text of that label, the label is hidden via CSS, or you're not executing the same page.

Display xml string on asp.net webpage

5 solutions

Solution 3

Solution 1

Solution 2

Solution 4

Solution 5

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