progamming XML in C#

virajithasarma · August 5th, 2005, 12:08 AM

Hi...

Can anyone help me out with progamming XML in C#....
I have been trying to convert an xml file into a stream (string builder) in C#....
I first started out with filestream class....
the stream reader to read the xml stream and then just tried to write it to the stringbuilder....:(

but I was not able to read the XML file using stream reader....
once u convert it to a stream why is not possible to read it....

plz help me out with this....
and reply to this addr: [email protected]

thanku

mehdi62b · August 6th, 2005, 01:02 PM

for reading XML files you have two options
1-you want to just read it as a simple text file irregardless of its format

Code:

            using(StreamReader reader=new StreamReader("C://test.xml"))
            {
                textBox1.Text=reader.ReadToEnd();
            }

2-you want to read it but for parsing purposes

Code:

            System.Xml.XmlTextReader xmlr=new XmlTextReader("C://test.xml");

Code:

            System.Xml.XmlValidatingReader vmv=new XmlValidatingReader(xmlr);
            //check if it has DTD info otherwise it doesn't check it
            vmv.ValidationType=ValidationType.Auto;
            //if it finds a error this event will be raised
            vmv.ValidationEventHandler+=new System.Xml.Schema.ValidationEventHandler(vmv_ValidationEventHandler);
            System.Xml.XmlDocument xmd=new XmlDocument();
            try
            {
                xmd.Load(vmv);
            }
            catch(XmlException){textBox1.Text="your XML file is not well-formed";}
            textBox1.Text=xmd.OuterXml;

_____________
Mehdi.
software student.

virajithasarma · August 7th, 2005, 09:49 PM

Thanku Mehdi.....
could u plz clear another small doubt i have...
I had written this code and till i included two statements "wr.flush" and "ms.flush"...programme was not giving any o/p....
wr is an streamwriter instance .... why would we do wr.flush to an instance.....I can understand "ms.flush" where ms is a memorystream instance....

MemoryStream ms = new MemoryStream();
            string fileName = "c:/excercise.xml";
            FileStream fs = new FileStream(fileName,FileMode.Open);
            StreamReader sr = new StreamReader(fs);
            string str = sr.ReadToEnd();
            sr.Close();
            StreamWriter wr = new StreamWriter(ms);
            wr.Write(str);
            wr.Flush();
            ms.Flush();
            ms.Position=0;
            StreamReader ar = new StreamReader(ms);

            string iu = ar.ReadToEnd();
            Console.WriteLine(iu);

mehdi62b · August 8th, 2005, 01:12 PM

well wr.Flush updates the uderlying stream which is the MemoryStream
and ms.Flush updates the memory..mainly ms.Flush is something redundant.

_____________
Mehdi.
software student.

virajithasarma · August 9th, 2005, 07:28 AM

Thanks Mehdi....
It was of very g8 help.....