Conn.open and Conn.close

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SQL

Hi,

Where want to use Conn.open and Conn.close in sql server. Whats the use of it.

Thanks in Advance.

Posted 9-Feb-12 23:15pm

Shanthoshshanmugam

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thatraja 10-Feb-12 5:39am

Probably you have to take a look at ADO.NET. Go to MSDN

Shanthoshshanmugam 10-Feb-12 5:41am

Ok Thanks!!

4 solutions

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Member 8178233 · Accepted Answer · 2012-02-09T23:48:00

Solution 5

yes, without using con.open() u can not fire a single query to database

Posted 9-Feb-12 23:48pm

Member 8178233

Nilesh Patil Kolhapur · Accepted Answer · 2012-02-09T23:48:00

Solution 4

Hi,
First of all understand the connected and disconnected architecture it will help u lot

Posted 9-Feb-12 23:48pm

Nilesh Patil Kolhapur

Member 8178233 · Accepted Answer · 2012-02-09T23:27:00

Solution 3

conn.open()is used to connecting to database

conn.close()is used to disconnecting from database

Posted 9-Feb-12 23:27pm

Member 8178233

Comments

Shanthoshshanmugam 10-Feb-12 5:30am

ok without using open and close connection if we executes the query means what will happen?

Thanks in Advance

Nilesh Patil Kolhapur 10-Feb-12 5:46am

without open connection u cant execute any single query on database

Shanthoshshanmugam 10-Feb-12 5:32am

Without using it, all the operation is working correctly whats the difference between that?

Nilesh Patil Kolhapur 10-Feb-12 6:49am

how its working let me know?

Espen Harlinn 11-Feb-12 5:13am

5'ed!

Sergey Alexandrovich Kryukov · Accepted Answer · 2012-02-09T23:23:00

If you don't know the use of it, your "want to use" makes no sense.

And this is not "Conn". There are few classes derived from System.Data.Common.DbConnection, see:

http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlconnection.aspx[^],
http://msdn.microsoft.com/en-us/library/system.data.common.dbconnection.open.aspx[^],
http://msdn.microsoft.com/en-us/library/system.data.common.dbconnection.close.aspx[^].

A quick answer should be enough: you want to use it because otherwise nothing can work.

—SA