system.invalidoperationexcepti...

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message system.invalidoperationexception: the connection was not closed current state is open. at system.data.providerbase.dbconnectioninternal.openconnection(dbconnection outerconnection,dbconnectionfactory connectionfactory) at system.data.sqlclient.sqlconnection.open() at pay_roll.show_in_datagridview()

Posted 13-Nov-11 23:51pm

prakash00060

Updated 14-Nov-11 0:17am

Richard MacCutchan

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Mehdi Gholam 14-Nov-11 5:53am

And your question is?

Richard MacCutchan 14-Nov-11 6:18am

Well there is enough information there to tell you what method and program caused the error. Check your source code and see if you can understand what is going on.

Smithers-Jones 14-Nov-11 7:29am

Not a question.

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CGN007 · Answer 1 · 2011-11-14T00:36:00

Solution 1

Add this code

C#

if (conn.State == ConnectionState.Open)
                conn.Close();

before you open the connection.

Posted 14-Nov-11 0:36am

CGN007

Pandya Anil · Answer 2 · 2011-11-14T00:48:00

as I understood, you are going to fill a grid and getting the error.

as per the error description, you are trying to open a already opened sql connection inside your method - > pay_roll.show_in_datagridview().

so add a check before opening the connection

C#

SqlConnection myConnection = new ...(...);
if (myConnection.State == ConnectionState.Closed)
{
    myConnection.Open();
}

alternatively you can use using keyword while working with unmanaged resources like sqlConnection, which will enforce the propper closing of the resources after use.

mark as answer if satisfied... :) it motivates.. :)