XML and XmlDataSource Control

Re: Append datas on xml file with xmlwriter class

chetan.gobbur — Wed, 10 Sep 2008 09:13:32 GMT

But how to add Node inside node? The Code is having idependent Tags.

Re: Append datas on xml file with xmlwriter class

Gery128 — Fri, 16 May 2008 05:05:55 GMT

there is no need to convert xmlWriter class.

string xmlFile = System.Web.HttpContext.Current.Server.MapPath("~/App_Data/Candidates.xml");

xmldoc = new XmlDocument();

xmldoc.Load(xmlFile);

root = xmldoc.DocumentElement;

try

{

XmlNode CandidateNode = xmldoc.CreateNode(XmlNodeType.Element, "Candidate", "");

XmlNode id = xmldoc.CreateNode(XmlNodeType.Element, "CandidateId", "");

id.InnerText = "1";

CandidateNode.AppendChild(id);

XmlNode subPositionId = xmldoc.CreateNode(XmlNodeType.Element, "SubPositionId", "");

subPositionId.InnerText = candidate.PositionId.ToString();

CandidateNode.AppendChild(subPositionId);

XmlNode firstName = xmldoc.CreateNode(XmlNodeType.Element, "FirstName", "");

firstName.InnerText = candidate.FirstName;

XmlNode lastName = xmldoc.CreateNode(XmlNodeType.Element, "LastName", "");

lastName.InnerText = candidate.LastName;

CandidateNode.AppendChild(firstName);

CandidateNode.AppendChild(lastName);

root.AppendChild(CandidateNode);

xmldoc.Save(xmlFile);

This will help you.

Re: Append datas on xml file with xmlwriter class

antonpious — Thu, 15 May 2008 14:17:37 GMT

Hi Eric
With .NET 2.0 there is another new overload of XmlWriter which takes in a TextWriter which is used to specify if you need to append to the file or not
Here is a sample XmlWriterSettings settings = null;
XmlWriter writer = null;

settings.Indent = true;
settings.OmitXmlDeclaration = true;
settings.NewLineOnAttributes = true;

settings = new XmlWriterSettings();

using (StreamWriter fileWriter = new StreamWriter(@"filenamewithpath", true))
{
writer = XmlWriter.Create(fileWriter, settings);

writer.WriteStartElement("Order");
writer.WriteAttributeString("OrderID", txtOrderID.Text);
writer.WriteAttributeString("Date", DateTime.Now.ToShortDateString());
writer.WriteElementString("Amount", txtAmount.Text);
writer.WriteEndElement();

writer.Flush();
}

Girish's method would be required if you would like to insert the nodes at a particular tree hierarchy than just appending at the end.
Happy programming
Anton

Re: Append datas on xml file with xmlwriter class

esohier — Thu, 15 May 2008 12:50:38 GMT

Hi and thanks for your answer.

Can you give me a true example to do this? More explicit to create XML node and append it?

How can I convert my xmlwriter class?

Re: Append datas on xml file with xmlwriter class

Gery128 — Thu, 15 May 2008 12:44:37 GMT

Hi Eshohier,

You can use XMLDocument class to load XML file already existing on server. for that first add the namespace "using System.Data.Xml;"

Then create a new instance of XMLDocument like , XMLDocument doc = new XMLDocumen(); Then just load xml by saying doc.Load("pass ur xml file path here"); and then you can create XMLNode and append it to the current xml. lastly you can save xml by saying doc.save("pass ur xml file path");

you

Re: Append datas on xml file with xmlwriter class

Gery128 — Thu, 15 May 2008 12:44:35 GMT

Hi Eshohier,

You can use XMLDocument class to load XML file already existing on server. for that first add the namespace "using System.Data.Xml;"

Re: Append datas on xml file with xmlwriter class

Gery128 — Thu, 15 May 2008 12:44:34 GMT

Hi Eshohier,

You can use XMLDocument class to load XML file already existing on server. for that first add the namespace "using System.Data.Xml;"

Append datas on xml file with xmlwriter class

esohier — Thu, 15 May 2008 12:12:45 GMT

Hi,

I've create a xml file using xmlwriter class.

I've a problem to append new data on this file, because the create method of xmlwriter overwrite the xml file.

How can I append datas with xmlwriter without lost previous datas?

Thanks by advance.