C# with XML. Urgent!Please Help!

jayce · October 8th, 2003, 03:56 AM

Hi,

  I tried with the following but it doesn't return the results that I wanted:

//create a new node and add it to the document.
XmlElement newelement = doc.CreateElement("Testing");
doc.DocumentElement.AppendChild(newelement);
XmlNode newElem = doc.CreateNode(XmlNodeType.Element, "pages", "");
newElem.InnerText = "290";
XmlElement root = doc.DocumentElement;
root.AppendChild(newElem);
doc.Save(sourceXml2);

The results:
<Items>
    <Testing />
    <pages>290</pages>
</Items>

where it should return this:
<Items>
    <Testing>
      <pages>290</pages>
    </Testing>
</Items>

So, may I know whether if you have any solutions for this?

Thanks

Regards,
Jayce

jacob · October 8th, 2003, 04:36 AM

OK! That was a lot

!

I havn't worked with datagrids at all so I cannot answer that, however perhaps I should try it, so that I can get some experience with this.

About the insertion of the new composite construction in the XML file I can help... I have worked with the previous example, and it turned out like this...

Code:

public void Page_Load(Object oSender, EventArgs e)
{
    String filename = Server.MapPath("books.xml");

    XmlDocument doc = new XmlDocument();
    XmlElement[] elements = new XmlElement[3];
    try
    {
        doc.Load(filename);
        elements[0] = doc.CreateElement("NewElement");

        elements[1] = doc.CreateElement("ABC");
        elements[1].AppendChild(doc.CreateTextNode("XXX"));
        elements[2] = doc.CreateElement("XYZ");
        elements[2].AppendChild(doc.CreateTextNode("AAA"));

        elements[0].AppendChild(elements[1]);
        elements[0].AppendChild(elements[2]);

        (doc.DocumentElement).AppendChild(elements[0]);

        doc.Save(filename);        
    }
    catch(Exception exeption)
    {

    }
}

I have tried it, and it should work. I will let you know it I get to try the datagrid.

Hope it will help

Jacob.

jayce · October 10th, 2003, 01:14 AM

Hi,

  Your solution is awesome! Thanks alot!!! ;)
It took me some time to fully understand it. Thank you.

But, What if I wanna read the Elements names from my xml?
<?xml version="1.0" standalone="yes"?>
<Items>
    <Books>
        <ISBN>123456</ISBN>
        <Title>ASP.NET</Title>
        <Publisher>Wrox</Publisher>
    </Books>
</Items>

for instance, i wanna read the elements of <Books> i.e. ISBN, Title, and Publisher.
I tried with :

XmlNodeList nodelist;
nodelist = root.GetElementsByTagName("Books");
IEnumerator ienum = nodelist.GetEnumerator();
while (ienum.MoveNext())
{
   XmlNode nodes = (XmlNode) ienum.Current;
   msg.Text += nodes.InnerText;
}

but, it returns the values of each elements like 123456, ASP.net, Wrox.

Thus, may I know the correct way in doing it?

Thank you

Jayce

jayce · October 10th, 2003, 01:43 AM

Hi,

  Let say I have the following XML:

<?xml version="1.0" standalone="yes"?>
<Items>
    <Books>
        <ISBN>123456</ISBN>
        <Title>ASP.NET</Title>
        <Publisher>Wrox</Publisher>
    </Books>
    <Books>
        <ISBN></ISBN>
        <Title></Title>
        <Publisher></Publisher>
    </Books>
</Items>

and now I wanted to insert/ modify values into the second part of <Books> where its elements contain no values. How am I going to detect which <Books> is without text in its child elements and then insert the new data into it?

Thank you

Jayce