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This article mainly explains "how to correctly connect the ADO.NET class library", the content of the article is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in depth, together to study and learn "how to correctly connect the ADO.NET class library" bar!

The ADO.NET class library is just the most important step in getting people to insert data. By mastering today's content, we will have the basis to do a slightly more practical news program.

In order not to distract, the program does not add input validation, and I will soon write a method to validate the input.

The first two methods operate on the disconnected recordsets and read information from the client cache. In addition, the first two methods are often used in WEB-oriented environments and brand-new n-tier systems.

In ADO, all of these methods correspond to different types of cursors. In this article, you will find that ADO.NET is different from ADO, but it has all the functions of ADO.NET class library. By contrast, your code will extract data from the actual data source and its physical storage media and formats.

The ADO.NET class library enables DataSet and DataReader to extract data from data sources. The former is a cache recorded in memory, which you can access from any direction and modify at will. The latter is a highly optimized object that moves forward only in a read-only recordset. Note: DataSet looks like a static cursor, but in fact, in .NET, ADO read-only cursors correspond to DataReader objects.

Note the use of the ExecuteNonQuery () method of the Command object, which can be used for insert, update, delete, etc.

The ADO.NET class library is an important method of Command objects.

Thank you for your reading, the above is the content of "how to correctly connect the ADO.NET class library". After the study of this article, I believe you have a deeper understanding of how to correctly connect the ADO.NET class library, 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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