Is there a basic guide on Xml document creation and editing (simpler
than the MSDN docs). Say I want to create a file containing the
following:
<?xml version="1.0" encoding="utf-8" standalone="yes "?>
<Files>
<File>
<Text>Test</Text>
<Name>Test.html </Name>
</File>
</Files>
I know how you can use XMLTextWriter to do this:
XmlTextWriter xtw = new XmlTextWriter(" myfile.xml",
System.Text.Enc oding.UTF8);
xtw.WriteStartD ocument(true);
xtw.WriteStartE lement("Files") ;
xtw.WriteStartE lement("File");
xtw.WriteElemen tString("Text", txtName.Text);
xtw.WriteElemen tString("Name", FileName);
xtw.WriteEndEle ment();
xtw.WriteEndEle ment();
xtw.WriteEndDoc ument();
xtw.Close();
However, how do you check if the file exists, and append to it instead
of overwriting?
<?xml version="1.0" encoding="utf-8" standalone="yes "?>
<Files>
<File>
<Text>Test</Text>
<Name>Test.html </Name>
</File>
<File>
<Text>Test 2</Text>
<Name>Test2.htm l</Name>
</File>
</Files>
Also, I may wish to delete an existing entry, under certain
circumstances (file deleted from disk):
<?xml version="1.0" encoding="utf-8" standalone="yes "?>
<Files>
<File>
<Text>Test 2</Text>
<Name>Test2.htm l</Name>
</File>
</Files>
And also, prevent duplicate entries being added (re uploading a file).
<?xml version="1.0" encoding="utf-8" standalone="yes "?>
<Files>
<File>
<Text>Test</Text>
<Name>Test.html </Name>
</File>
<File>
<Text>Test 2</Text>
<Name>Test2.htm l</Name>
</File>
<File>
<Text>Test</Text>
<Name>Test.html </Name>
</File>
</Files>
I know there is a class library at the code project that writes to XML
files (http://www.codeproject.com/csharp/ReadWriteXmlIni.asp), but it
does far more than I need and I would rather learn how to do it myself
than rely on a third party library.
I would also like to read the xml from the file and then display in a
page (links to documents, Text is the link text, Name is the file
name). Bound to a repeater, also displaying file size by querying the
file system.
