sqlconnection state

  1. sqlconnection Syntax: Public sealed class sqlconnection: dbconnection, icloneable Indicates the connection to the SQL Server database. This class cannot be inherited. Namespace: system. Data. sqlclientAssembly: system. Data (in system. Data.

1 God said, to connect to the database, so there is a SqlConnection (database connection, configuration connection string, such as user name password)2 God says, to execute the SQL statement. Then there is the SqlCommand, directly translated into

The first code is concise, but many people, including myself, may have a few important questions: 1. How do I share only one connection object for multiple database tutorials in parallel? 2. A Lock is applied to the parallel processing, and each

In the previous article, I briefly discussed the correct use of sqlconnection. by talking about the connection pool, I accidentally encountered a problem: After the close and dispose methods of sqlconnection are executed, is this connection object

The first paragraph is very concise, but many people, including myself, can not help but have a few big questions: 1, how to parallel operation N Multiple database tutorials to share only one connection object? 2, parallel processing where the

First, Common properties[1] ConnectionString Gets or sets the string that is used to open the SQL Server database. (Rewrite dbconnection.connectionstring. ）[2] ConnectionTimeout gets the time to wait before terminating an attempt and generating an

There are four connection types: sqlconnection, oledbconnection, odbcconnection, and oracleconnection. Objects in the sqlconnection class are connected to the SQL Server database; objects in the oracleconnection class are connected to the Oracle

Since I was born from poverty, I have not yet been familiar with Orcle, DB2 and other big brother, I used to use ACCESS to play in school, and then I was SQL. The ACCESS connection string does not change, so there may be other providers. For SQL, I

This article describes in detail how to use a connection object to connect to a database. For different. NET data providers, ADO. net uses different connection objects to connect to the database. These connection objects shield us from specific

There are four types of Connection: Sqlconnection,oledbconnection,odbcconnection and OracleConnection. The object of the SqlConnection class connects to the SQL Server database, the object of the OracleConnection class connects to the Oracle