Change local connection string on remote server

Question

Hello,
 I have searched every post and tried every connection string there but can't figure out how to connect to my database on my  remote server. I am using Visual Developer 2005 Express Edition in C# and uploading it to a Windows server running asp.net 2.0. The domain has not resolved yet.
I am so new to this and have followed many tutorials step by step but none of them address this issue. They just show how to upload it to the server.
Do I need to use the SQL server provided by my host or can the database stay in the App_Data folder?
My local connection string works locally:
  <add name="ConnectionString" connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\add_newSQL.mdf;Integrated Security=True;User Instance=True"
   providerName="System.Data.SqlClient" />
When I uploaded to my server I changed \SQLEXPRESS  to (local) as advised in the forum.
<add name="ConnectionString" connectionString="Data Source=(local);AttachDbFilename=|DataDirectory|\add_newSQL.mdf;Integrated Security=True;User Instance=True"
providerName="System.Data.SqlClient" />
When I debug a page I get the <customErrors mode="Off"/>
error message even thought I have already set it in my remote web.config file which may be causing problems itself:
<configuration>
<appSettings/>
<connectionStrings>
<add name="ConnectionString" connectionString="Data Source=(local);AttachDbFilename=|DataDirectory|\add_newSQL.mdf;Integrated Security=True;User Instance=True"
providerName="System.Data.SqlClient" />
</connectionStrings>
<system.web>
<customErrors mode="Off" />
<compilation debug="false" />
<authentication mode="Windows" />
</system.web>
</configuration>
Thanks for any help you can offer. I wish I could find someone to hire to do this part for me or teach me how over the phone. Any suggestions?

Answer 1

Is this still an issue?
Thanks!
Ed Price, Power BI & SQL Server Customer Program Manager (Blog,
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