Building a Google Product Feed in .Net (C#)?

.net-3.5, c#, rss, xml

Solution

What if, instead of doing this:

xw.WriteStartElement("rss version=\"2.0\"");
xw.WriteAttributeString("xmlns", "g", null, "http://base.google.com/ns/1.0");

You did something like this:

xw.WriteStartElement("rss");
xw.WriteAttributeString("version", "2.0");
xw.WriteAttributeString("xmlns", "g", null, "http://base.google.com/ns/1.0");

I've never used XmlTextWriter before, but I'd think you should be able to add the version attribute after creating the rss tag, based on your code example. (Might wanna double-check my syntax)

Problem

Below is the schema I am trying to conform to: ``` <?xml version="1.0"?> <rss version="2.0" xmlns:g="http://base.google.com/ns/1.0"> <channel> <title>The name of your data feed</title> <link>http://www.example.com</link> <description>A description of your content</description> <item> <title>Red wool sweater</title> <link> http://www.example.com/item1-info-page.html</link> <description>Comfortable and soft ... cold winter nights.</description> <g:image_link>http://www.example.com/image1.jpg</g:image_link> <g:price>25</g:price> <g:condition>new</g:condition> <g:id>1a</g:id> </item> </channel> </rss> ``` Below is what I have been able to produce: ``` <?xml version="1.0"?> <rss version="2.0" xmlns:g="http://base.google.com/ns/1.0"> <channel> <title>The name of your data feed</title> <link>http://www.google.com</link> <description>A description of your content</description> <item> <title>Red Wool Sweater</title> <link>http://www.google.com/Red-Wool-Sweater</link> <description>Comfortable and soft, this sweater will keep you warm on those cold winter nights.</description> <g:image_link>http://www.example.com/image1.jpg</g:image_link> <g:price>25</g:price> <g:condition>new</g:condition> <g:id>1a</g:id> </item> </channel> </rss version="2.0"> ``` Below is the code that I wrote to achieve this (the above): ``` // create and instantiate the writer object. XmlTextWriter xw = new XmlTextWriter("Products.xml", null); // use indenting. xw.Formatting = Formatting.Indented; // write the start of the document. xw.WriteStartDocument(); xw.WriteStartElement("rss version=\"2.0\""); xw.WriteAttributeString("xmlns", "g", null, "http://base.google.com/ns/1.0"); xw.WriteStartElement("channel"); xw.WriteElementString("title", "The name of your data feed"); xw.WriteElementString("link", "http://www.google.com"); xw.WriteElementString("description", "A description of your content"); xw.WriteStartElement("item"); xw.WriteElementString("title", "Red Wool Sweater"); xw.WriteElementString("link", "http://www.google.com/Red-Wool-Sweater"); xw.WriteElementString("description", "Comfortable and soft, this sweater will keep you warm on those cold winter nights."); xw.WriteElementString("g:image_link", "http://www.example.com/image1.jpg"); xw.WriteElementString("g:price", "25"); xw.WriteElementString("g:condition", "new"); xw.WriteElementString("g:id", "1a"); // write the end element. xw.WriteEndElement(); xw.WriteEndElement(); xw.WriteEndElement(); // write the end of the document. xw.WriteEndDocument(); // close the writer. xw.Close(); // press enter to exit. Console.ReadKey(); ``` Those with eager eyes, will have spotted the problem I am having conforming to the google product feed schema ... "the closing rss tag element" ... is wrong. I have managed to replicate alot of it so far but that closing tag eludes. Can you guys help? Also, feel to free to change my code if I have done anything wrong or gone about doing it the wrong way? Cheers.

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