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How to add XML schema and XML element together in same file?

**
I want to add XML schema and XML element together in same file. Because this xml file we will need to generate through C# based on specific record. So, i am looking some code help how can i write together XMLSchema and XML element in same file and inside same element. Please check attachment.
<Survey>
**Here i want XML schema**
**Here i want XML element**
</Survey>

Working Code Example
SiteSurveyX siteSurveyX = new SiteSurveyX();
XmlTextReader reader = new XmlTextReader("c:\\temp\\TestSiteSchema.xsd");
//siteSurveyX.SurveySchema = XmlSchema.Read(reader, null);
XmlSchema myschema = XmlSchema.Read(reader, null);
string filePath = HelperFunctions.SurveyFilePath + routeName;
////Get all node record from DB
siteSurveyX.Survey = routeService.GetRouteDetailForXML(routeId, Convert.ToString(ddlRoute.Text), chkCurrentInterruption.Checked);
using (FileStream stream = new FileStream(filePath, FileMode.Create, FileAccess.ReadWrite))
{
lblStatus.Text = "Preparing file";
stream.Close();
stream.Dispose();
//Convert record in XML
XmlSerializer serializer = new XmlSerializer(typeof(SiteSurveyX));
using (StreamWriter writer = new StreamWriter(filePath, true))
{
serializer.Serialize(writer, siteSurveyX);
lblStatus.Text = "Ready";
}
}
It's done with this code.

Read and overwrite at the same FileStream

I'm using a FileStream to lock the File to be not writeable for other processes and also read and write to it, I'm using following method for it:
public static void ChangeOrAddLine(string newLine, string oldLine = "")
{
string filePath = "C:\\test.txt";
FileMode fm = FileMode.Create;
//FileMode fm = FileMode.OpenOrCreate;
using (FileStream fs = new FileStream(filePath, FileMode.Create, FileAccess.ReadWrite, FileShare.Read))
using (StreamReader sr = new StreamReader(fs))
using (StreamWriter sw = new StreamWriter(fs))
{
List<string> lines = sr.ReadToEnd().Split(new string[] { "\r\n" }, StringSplitOptions.None).ToList();
bool lineFound = false;
if (oldLine != "")
for (int i = 0; i < lines.Count; i++)
if (lines[i] == oldLine)
{
lines[i] = newLine;
lineFound = true;
break;
}
if (!lineFound)
lines.Add(newLine);
sw.Write(string.Join("\r\n", lines));
}
}
I want to overwrite it with the new content but i don't find the right FileMode, using FileMode.OpenOrCreate just appends the new content to the old and FileMode.Create deletes the file-content at the time, the FileStream fm has been initialized, so the file is empty.
I need to just clear the old content at the moment, when i write the new content to it without losing the write-lock on it during the method is running.

OpenOrCreate just appends ...
Because you don't reposition after the reading.
That also shows the main problem with your approach: The FileStream only has one Position, and the Reader and the Writer heavily use caching.
However, as long as you want to replace everything and really need that locking scheme:
using (FileStream fs = new FileStream(filePath,
FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.Read))
{
using (StreamReader sr = new StreamReader(fs))
{
... // all the reading
}
fs.Position = 0;
using (StreamWriter sw = new StreamWriter(fs))
{
sw.Write(string.Join("\r\n", lines));
}
fs.SetLength(fs.Position); // untested, something along this line
}
and maybe you have to convince the sw and sr to leave their stream open.
But I have to note that the FileShare.Read flag doesn't make too much sense in this scenario. A reader could see al sorts of inconsistent data, including torn lines and broken UTF8 characters.

Why xmlreader can't read something that xmlwriter wrote?

I have the simplest code in the world,
using (XmlWriter writer = XmlWriter.Create(stringWriter))
{
writer.WriteStartDocument();
writer.WriteStartElement("Board");
writer.WriteAttributeString("Rows", mRows.ToString());
writer.WriteAttributeString("Columns", mColumns.ToString());
writer.WriteEndElement();
writer.WriteEndDocument();
}
TextWriter writer1 = new StreamWriter(path);
writer1.Write(stringWriter.toString());
writer1.Close();
Then i write it to a txt file that looks like this:
<?xml version="1.0" encoding="utf-16"?>
<Board Rows="30" Columns="50">
</Board>
Then i do the following :
FileStream str = new FileStream(s.FileName, FileMode.Open);
using(XmlReader reader = XmlReader.Create(stream))
{
reader.Read();
}
And it throws an exception :
"There is no Unicode byte order mark. Cannot switch to Unicode."
I googled the exception and found several workarounds, but i don't understand why i need a work around, i just want to read the xml i wrote.
Can some one please explain what exactly the problem is ?
Should i write something differently in the xml ?
What is the simplest solution to this ?

You're probably not writing to a unicode file which File.WriteAllText or a vanilla FileStream does not do.
Instead use File.OpenWrite or FileStream combined with the StreamWriter(Stream steam, Encoding encoding) constructor to specify unicode.
Sample:
var path = #"C:\Dev\sample.xml";
string xml;
var mRows = 30;
var mColumns = 50;
var options = new XmlWriterSettings { Indent = true };
using (var stringWriter = new StringWriter())
{
using (var writer = XmlWriter.Create(stringWriter, options))
{
writer.WriteStartDocument();
writer.WriteStartElement("Board");
writer.WriteAttributeString("Rows", mRows.ToString());
writer.WriteAttributeString("Columns", mColumns.ToString());
writer.WriteEndElement();
writer.WriteEndDocument();
}
xml = stringWriter.ToString();
}
if(File.Exists(path))
File.Delete(path);
using(var stream = File.OpenWrite(path))
using(var writer = new StreamWriter(stream, Encoding.Unicode))
{
writer.Write(xml);
}
Console.Write(xml);
using(var stream = File.OpenRead(path))
using(var reader = XmlReader.Create(stream))
{
reader.Read();
}
File.Delete(path);

how to save xmldocument to a stream

I've already written code to parse my xml file with an XmlReader so I don't want to rewrite it. I've now added encryption to the program. I have encrypt() and decrypt() functions which take an xml document and the encryption algorithm. I have a function that uses an xml reader to parse the file but now with the xml document I'm not sure how to create the xmlreader.
The question is how to save my xml document to a stream. I'm sure it's simple but I don't know anything about streams.
XmlDocument doc = new XmlDocument();
doc.PreserveWhitespace = true;
doc.Load(filep);
Decrypt(doc, key);
Stream tempStream = null;
doc.Save(tempStream); // <--- the problem is here I think
using (XmlReader reader = XmlReader.Create(tempStream))
{
while (reader.Read())
{ parsing code....... } }

You can try with MemoryStream class
XmlDocument xmlDoc = new XmlDocument( );
MemoryStream xmlStream = new MemoryStream( );
xmlDoc.Save( xmlStream );
xmlStream.Flush();//Adjust this if you want read your data
xmlStream.Position = 0;
//Define here your reading

Writing to a file:
static void Main(string[] args)
{
XmlDocument doc = new XmlDocument();
doc.LoadXml("<FTPSessionOptionInfo><HostName>ftp.badboymedia.ca</HostName></FTPSessionOptionInfo>");
using (StreamWriter fs = new StreamWriter("test.xml"))
{
fs.Write(doc.InnerXml);
}
}

I realize this is an old question, but thought it worth adding a method from this nice little blog post. This edges out some less performant methods.
private static XDocument DocumentToXDocumentReader(XmlDocument doc)
{
return XDocument.Load(new XmlNodeReader(doc));
}

try this
XmlDocument document= new XmlDocument( );
string pathTmp = "d:\somepath";
using( FileStream fs = new FileStream( pathTmp, FileMode.CreateNew ))
{
document.Save(pathTmp);
fs.Flush();
}

I want to edit my xml file

Hi I am working on XML file, here I want to give rights to user to edit my xml file nodes to his own custom language.
I am enclosing my code, but it is not editting my xml file. Need assistance.
class Program
{
static void Main(string[] args)
{
//The Path to the xml file
string path = "D://Documents and Settings//Umaid//My Documents//Visual Studio 2008//Projects//EditXML//EditXML//testing.xml";
//Create FileStream fs
System.IO.FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
//Create new XmlDocument
System.Xml.XmlDocument xmldoc = new System.Xml.XmlDocument();
//Load the contents of the filestream into the XmlDocument (xmldoc)
xmldoc.Load(fs);
//close the fs filestream
fs.Close();
//Change the contents of the attribute
xmldoc.DocumentElement.ChildNodes[0].Attributes[0].InnerText = "Umaid";
// Create the filestream for saving
FileStream WRITER = new FileStream(path, FileMode.Truncate, FileAccess.Write, FileShare.ReadWrite);
// Save the xmldocument
xmldoc.Save(WRITER);
//Close the writer filestream
WRITER.Close();
}
}
My XML file which I am going to edit, but couldn't.
<?xml version="1.0" encoding="utf-8" ?>
<rule id="city" scope="public">
<one-of>
<item>Boston</item>
</one-of>
</rule>

What do you really want to do with your XML?? Which attribute to you want to change??
One hint: you can load and save XmlDocument to a path directly - no need for the filestream .....
xmldoc.Load(#"D:\yourpath\file.xml");
xmldoc.Save(#"D:\yourpath\newfile.xml");
The problem is that your expression xmldoc.DocumentElement.ChildNodes[0] selects the <one-of> node which has no attributes.
You cannot change a non-existing attribute.
If you want to change the "id" attribute of <rule>, you need to do this on the DocumentElement:
xmldoc.DocumentElement.Attributes["id"].Value = "Umaid";
If you want to change the text inside the <item>, do this:
XmlNode itemNode = xmldoc.SelectSingleNode("/rule/one-of/item");
if(itemNode != null)
{
itemNode.InnerText = "Umaid";
}
Marc

class Program
{
static void Main(string[] args)
{
string path = "D:\\Documents and Settings\\Umaid\\My Documents\\Visual Studio 2008\\Projects\\EditXML\\EditXML\\testing.xml";
XmlDocument doc = new XmlDocument();
doc.Load(path);
var itemNode = doc.SelectSingleNode("rule/one-of/item");
if (itemNode != null)
{
itemNode.InnerText = "Umaid";
}
doc.Save(path);
}
}