Solved

Invalid connection?

Posted on 2002-07-17
2
224 Views
Last Modified: 2008-02-01
This is the code I use:
-----------------------------
SqlConnection myConnection = new SqlConnection("Data Source=" + Server.MapPath("nyheter.mdb") + ";");
string myInsertQuery = "INSERT INTO tblNyheter (nyhetsRubrik, nyhetsText, nyhetsUser) Values('" + strRubrik + "', '" + strText + "', '" + strUser + "')";
SqlCommand myCommand = new SqlCommand(myInsertQuery);
myCommand.Connection = myConnection;
myConnection.Open();
myCommand.ExecuteNonQuery();
myCommand.Connection.Close();
-----------------------------

I get the error message "Invalid connection" when on the line "myConnection.Open();".

Anyone who can help me out?

I'd appreciate a quick answer (more points to earn).
0
Comment
Question by:SilvioF
2 Comments
 
LVL 4

Accepted Solution

by:
kpkp earned 75 total points
ID: 7159188
There are a few problems with your code.

For MS Access database updates you need to use the System.Data.OleDb namespace, not System.Data.SqlClient.  So you would use OleDbConnection not SqlConnection.  And OleDbCommand not SqlCommand.

Also you connection string doesn't have a provider element, this should be something like Provider=Microsoft.Jet.OLEDB.4.0;

Finally, it's better practice to use the OleDBCommand.Parameters collection to include variable items in your sql string.. do something like

string myInsertQuery = "INSERT INTO tblNyheter (nyhetsRubrik, nyhetsText, nyhetsUser) Values(?, ?, ?)";

System.Data.OleDb.OleDbCommand myCommand = new System.Data.OleDb.OleDbCommand(myInsertQuery);
myCommand.Parameters.Add(new System.Data.OleDb.OleDbParameter("nyhetsRubrik", strRubrik));
myCommand.Parameters.Add(new System.Data.OleDb.OleDbParameter("nyhetsText", strText));
myCommand.Parameters.Add(new System.Data.OleDb.OleDbParameter("nyhetsUser", strUser)):
0
 

Author Comment

by:SilvioF
ID: 7159196
Thanks. It worked like a charm.  =)
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
creating a flowchart from an algorithm 5 30
Need to pass a connection through class/Method 1 39
ADO.NET ENTITY DATA MODEL 3 30
Two different visual studio versions 3 21
Introduction                                                 Was the var keyword really only brought out to shorten your syntax? Or have the VB language guys got their way in C#? What type of variable is it? All will be revealed.   Also called…
Article by: Najam
Having new technologies does not mean they will completely replace old components.  Recently I had to create WCF that will be called by VB6 component.  Here I will describe what steps one should follow while doing so, please feel free to post any qu…
This video demonstrates how to create an example email signature rule for a department in a company using CodeTwo Exchange Rules. The signature will be inserted beneath users' latest emails in conversations and will be displayed in users' Sent Items…
Need to grow your business through quality cloud solutions? With everything required to build a cloud platform and solution, you may feel like the distance between you and the cloud is quite long. Help is here. Spend some time learning about the Con…

937 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now