9/17/2023 0 Comments Visual studio code theme generatorSet the content of the file to be the XML shown in the previous section.Īdd a C# file to your project and write in it a sample of the code that you want to be able to write. In the Add New Item dialog box, select XML File from the Templates pane.įor this walkthrough, name the file exampleXml.xml. In Solution Explorer, right-click the project, click Add and then Click New Item. The file should be part of the project so that the template can read it, but it will not be built into the compiled application. The template will produce a C# class for each node type in this file. It could be a file that will be used for testing your application. The purpose of this file is to provide samples of the XML node types that you want your application to be able to read. On the File menu click New and then click Project.Ĭlick the Visual C# node, and then in the Templates pane, click Console Application. This walkthrough uses a C# project, and for the purposes of testing we use a console application. You can apply this technique to any code project. Set up the Project Create or open a C# project In this project, a single template file is used to generate the classes that make the typed version possible. In the untyped version that uses generic XML code, there is no such support. The compiler highlights the parts of the application code that must be changed. In the strongly typed version, a change to the XML schema results in changes to the classes. In the project that this walkthrough constructs, you can write code such as the following, and IntelliSense prompts you with the correct attribute and child names as you type: Catalog catalog = new Catalog(xmlDocument) įoreach (Artist artist in catalog.Artist)Ĭontrast this with the untyped code that you might write without the template: XmlNode catalog = xmlDocument.SelectSingleNode("catalog") įoreach (XmlNode artist in catalog.SelectNodes("artist"))Ĭonsole.WriteLine() įoreach (XmlNode song in artist.SelectNodes("song")) The template shown here is provided as an example. The application xsd.exe, which is included with Visual Studio, can generate strongly-typed classes from XML files. The purpose of the sample XML file is to provide examples of all the node types that you want your application to deal with. You can also run your application on any other files that use the same node types. In the hand-written code, you can use these classes to navigate the XML file. In this example project, a template reads a sample XML file, and generates classes that correspond to each type of node. It is therefore very easy to make programming mistakes such as expecting the wrong type of child node, or the wrong attributes. Unfortunately, all the nodes have the same type, XmlNode. The System.Xml namespace provides comprehensive tools for loading an XML document and then navigating it freely in memory. This walkthrough demonstrates this benefit. Contrast this with the alternative technique of writing a completely generic program that accepts a configuration file, which is more flexible, but results in code that is neither so easy to read and change, nor has such good performance. Applies to: Visual Studio Visual Studio for Mac Visual Studio CodeĬode generation allows you to produce program code that is strongly typed, and yet can be easily changed when the source model changes.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |