ExecuteReader requires an open and available Connection

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Hi All,

I got the exception in Windows Service,While runnunig the service.

"ExecuteReader requires an open and available Connection. The connection's current state is closed".

Please guide Me....

Thanks
Anilkumar

Posted 27-Jun-12 23:19pm

ajay.anilmaddi

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3 solutions

Solution 3

hi ajay...

you must open the connection before Mycommand.ExecuteReader(),

like this.

C#

 myconnection.open();
 Mycommand.ExecuteReader();
.............
.............
 myconnection.close();

Posted 28-Jun-12 3:16am

sandeep nagabhairava

Solution 2

Hi,
Check have you opened the connection before the statement- command.ExecuteReader() if not then write this statement before this statement-
Connection.Open()
where Connection is Connection object.

Posted 28-Jun-12 1:24am

Jαved

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Vani Kulkarni · Accepted Answer · 2012-06-27T23:26:00

This may occur for following reasons:

1.) SQL server will hang up on you if you exceed the agreed upon timeout between requests.

2.) If you are non-local, the connection may be broken and might need to be re-established.

3.) You may not have successfully connected the first time (maximum number of connections exceeded).

The utility of this exception is that it gives you the opportunity to handle these cases cleanly.

Catch the exception, and then reopen the connection if this happens. If the reopen fails -- your network is down or the server is ignoring you. If the server is ignoring you and you know that you are the only process that should be accessing the server, look for connection leaks to make sure that you aren't leaking connections.

I hope this helps. Also see below links for more reference:

http://www.daniweb.com/software-development/csharp/threads/239216/executereader-requires-an-open-and-available-connection.-the-connections-current-sta[^]
http://stackoverflow.com/questions/839014/executereader-requires-an-open-and-available-connection-the-connections-curren[^]
http://forums.asp.net/t/1069710.aspx/1[^]