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This article mainly introduces "how to better design ADO.NET". In daily operation, I believe many people have doubts about how to better design ADO.NET. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the questions of "how to better design ADO.NET"! Next, please follow the editor to study!

ADO.NET is designed to help developers develop efficient multi-tier database applications for use on Intranet and Internet, and the ADO.NET object model provides such a means. Figure 1.1 shows the class that contains the ADO.NET object model. The dotted line in the middle divides the object model into two parts.

The object to the left of the dotted line is the connected object. Design ADO.NET these objects communicate directly with the database to manage connections and transactions, as well as retrieve data from the database and commit changes to the database. The object to the right of the dotted line is a disconnected object that allows the user to process data offline.

Objects consisting of unconnected parts of the ADO.NET object model do not communicate directly with connected objects. This is an important change to Microsoft's previous data access object model. In ADO, the Recordset object stores the results of the query. You can call its Open method to extract the query results, call its Update (or UpdateBatch) method, and design an ADO.NET to submit changes stored in Recordset to the database.

The ADO.NET DataSet (dataset) discussed later is functionally equivalent to ADO Recordset. But the design ADO.NET does not communicate with the database. To extract data from the database and put it into DataSet, you can pass DataSet to the Fill method of a connected ADO.NET object (DataAdapter). Similarly, to commit pending changes stored in DataSet to the database, you can pass DataSet to the Update method of the DataAdapter object.

At this point, the study on "how to better design ADO.NET" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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