By Jonathan Hartwell
Learn XML and the way to take advantage of and combine it into your C# purposes utilizing this compact publication. This advisor is helping you keep away from the pitfalls of facing XML and C# when you consider that dealing with XML with C# and the .NET Platform can current its personal set of demanding situations. XML is way from a lifeless know-how, so you will need to find out how most sensible to take advantage of it on your purposes while the necessity arises.
What you are going to Learn
- Gain the necessities of XML for C# development
- Read XML records with XMLDocuMent and XDocument
- Write XML with XMLDocument, XDocument, and XMLWriter
- Modifiy your XML with XML rfile and XDocument
Who This publication Is For
Experienced home windows software programmers/developers utilizing .NET and C# who will be new to utilizing and utilizing XML.
Read or Download C# and XML Primer PDF
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Extra resources for C# and XML Primer
When we find it, we use the Attributes method on the XElement instance. If we pass in a name, then it will get a IEnumerable of all the XAttributes with that name. If we don’t pass in a name, it will give us an IEnumerable of all the attributes. Since we only want one attribute, we will search for checkedout and then get the first instance. That will return an instance of XAttribute that represents the checkedout attribute. It is on this instance that we must call Remove. Once we do that, we get the output in Figure 3-17.
The output from creating a new book element We have a book element, but we don’t have all of the information for this book. We are missing a title and author, so let’s add that now, but first we need to create the new elements. AppendChild(year); Using the instance of XmlDocument, "doc", and XmlNode, "book", from above, we can create the new instances of XmlNodes by using the CreateElement method, just as we have done before. The new method comes in the form of AppendChild. The AppendChild method will take an XmlNode and add it as child of the XmlNode instance that is calling the method.
In other words, if you are going to put the attribute on XML in the document represented by an instance of XmlDocument, then you need to use that instance to create the attribute via the CreateAttribute method. Now that we have an instance of XmlAttribute, we can modify the value and then add to the instance of the XmlNode movie. Figure 3-3 displays what the movie elements look like after the addition of the attribute. 26 Chapter 3 ■ Modifying XML Figure 3-3. The output after adding the damaged attribute Adding Elements We have added a damaged attribute to the movie elements in our library, but that isn’t all we have to do.