An example Analysis of C # Database connection object

This article mainly explains "C#database connection object example analysis". The explanation content in this article is simple and clear, easy to learn and understand. Please follow the idea of Xiaobian and go deep into it slowly to study and learn "C#database connection object example analysis" together.

Working with C#database connection objects:

Connecting to the appropriate database is an essential step for database applications, and our program is no exception. So we have to create a C#database connection object in the constructor of our program, as follows:

public Form1 () { //// InitializeComponent() required for Windows Forms Designer support; //create a connection conn = new SqlConnection(ConnectionString); }

In this way, we can use the C#database connection object in future operations on the database.

At the same time, at the end of our program, it is necessary to close the C#database connection object, otherwise it may cause some unexpected errors. So we have to add a statement to close the C#database connection object in the overloaded Dispose function of the program, but because the. Net framework has automatic garbage collection, we don't have to explicitly destroy the object as in C++. The specific methods are as follows:

protected override void Dispose( bool disposing ) { //program is finished, ensure database connection is closed if (conn.State == ConnectionState.Open) conn.Close(); if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } Thank you for reading, the above is the content of "C#database connection object example analysis", after the study of this article, I believe that everyone has a deeper understanding of C#database connection object example analysis, the specific use of the situation still needs to be verified by practice. Here is, Xiaobian will push more articles related to knowledge points for everyone, welcome to pay attention!