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I am using Win forms 2005 with ms access. I want to make my connectionstring global.
For that i am putting my connectionstring in app.config like:

<?xml version="1.0" encoding="utf-8"?>
    <section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data, Version=, Culture=neutral, PublicKeyToken=null" />
  <appSettings >
    <add key ="Test" value ="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\Transport.mdb" />

In my form i read it like:
dim str as string
dim stringcn as string
dim cn as oledbconnection
cn=new oledbconnection(stringcn)
str = "isert into tablename(column1) values(fieldname)"

but when i run it does not give any error but nothing gets stored in the database.

So what is the problem? Where is the mistake?
Please tell me.
Updated 15-Jul-10 19:56pm


Have you checked wherther you have been able to Open the connection? Please check the "State" property of connection object to make sure indeed connection is not created.

<br />
cn=new oledbconnection(stringcn);<br /><br />
if(cn.State==ConectionState.Open)<br />
{<br />
   MessageBox.Show("Connection Opened");<br />
}<br />
else<br />
{<br />
   MessageBox.Show("Connection Closed");<br />
}<br />
<br />

If you see connection is opened, then the problem might be in some other place. Then use try-catch block to identify if anything goes wrong.
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Npanchasara 16-Jul-10 2:46am    
thank you..
i tried this one... connection is open but still it not store record in databse.
i didnt find the mistake what is the problem?

help me!
Arindam Tewary 16-Jul-10 4:31am    
Did you use try - catch block while using ExecuteNonQuery() and still you didnt get any error/exception ? Do you have a situation where you dont have any exception generated and still you done see data is updated? Please confirm.
If you get any exception/error after using try catch block please post the exception.
Give this a try a third down the page

Try this

you've made the connection now you have to insert the row into the database
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