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This article mainly shows you "how to use ADO.NET", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "how to use ADO.NET" this article.

The data is extracted from the database and passed to a middle-tier business object and then to the user interface. In order to adapt to this kind of data exchange, ADO.NET adopts a continuous transmission format based on XML. That is, when data is transferred from one layer to another, the solution of ADO.NET technology is to express the data in memory (that is, the dataset) as XML, and then pass it to other components in XML format.

The following figure shows the main components of the ADO.NET solution.

To facilitate data processing, Visual Studio.NET has added many new features. For advanced XML developers, Microsoft provides a XML designer with color identification, and ADO.NET technology has the functions of automatic sentence completion and label automatic completion.

If you want a more graphical view of the data, developers can use the design view of the XML designer: simply drag and drop data sources, including Microsoft SQL Server and Oracle databases, into the design interface. You can use any data source, including XML files, ADO.NET technology to create your dataset.

In general, ADO.NET technology you need to add, modify or delete data to develop your application. With the data Preview tab, you can not only add and modify data, but also manipulate associations between data.

The above is all the contents of this article "how to use ADO.NET". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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