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This article mainly explains "how to use ADO.NET technology". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn how to use ADO.NET technology.

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.

Thank you for your reading, the above is the content of "how to use ADO.NET technology", after the study of this article, I believe you have a deeper understanding of how to use ADO.NET technology, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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