Question

I have an xml file like this,

<?xml version="1.0" encoding="utf-8" ?>
<root>  
  <FeaturedProductCategories>
    <FeaturedProductCategory>
      <FeaturedProducts>
        <FeaturedProduct>
          <ContentSelector datavalue_idtype="content:smartform" datavalue_displayvalue="«Smart Form:49»">49</ContentSelector>
        </FeaturedProduct>
      </FeaturedProducts>
    </FeaturedProductCategory>
  </FeaturedProductCategories>
</root>

I want to modify it like the one below,

<?xml version="1.0" encoding="utf-8" ?>
<root>
  <Title>HomePage</Title>
  <FeaturedProductCategories>
    <FeaturedProductCategory>
      <FeaturedProducts>
        <FeaturedProduct>
          <Products>
            <Product>
              <ProductTitle>Product</ProductTitle>
              <ProductDate>03-08-2012 11:57:25</ProductDate>
              <ProductImage>
                <img src="ex1.jpg" />
              </ProductImage>
              <ProductThumbnailImage>
                <img src="ex2.jpg" />
              </ProductThumbnailImage>
              <ProductCaption>Product Caption</ProductCaption>
              <ProductImage>
                <img src="ex3.jpg" />
              </ProductImage>
              <ProductThumbnailImage>
                <img src="ex4.jpg" />
              </ProductThumbnailImage>
              <ProductCaption>Product Caption</ProductCaption>
            </Product>
          </Products>
        </FeaturedProduct>
      </FeaturedProducts>
    </FeaturedProductCategory>
  </FeaturedProductCategories>
</root>

All the new nodes and values are to be added through a C# function. Let us assume these new values as static values for now.

Also the node “FeaturedProduct” is not only one. There are a lot of nodes in that name. I want to modify all the “FeaturedProduct” nodes.

Answer 1

This doesn’t use linq exactly, but It will serve your purpose

        XmlDocument xDoc = new XmlDocument();
        xDoc.Load("filename.xml");

        foreach (XmlNode xNode in xDoc.SelectNodes("//FeaturedProduct"))
        {
            XmlElement newElement = xDoc.CreateElement("newElementName");
            XmlAttribute newAttribute = xDoc.CreateAttribute("AttributeName");
            newAttribute.Value = "attributeValue";
            newElement.Attributes.Append(newAttribute);

            xNode.AppendChild(newElement);
            xNode.InnerText = "myInnerText";
        }

Also, This Documentation is a very handy reference for Xpath