Question

I am have a register page on my website built in VS2010 and when I fill the form in a click register I am getting the following error. Help would be appreciated.

System.Exception was unhandled by user code
      Message=Insert Error:Directory lookup for the file "C:\Users\myname\Documents\myname\Project\App_Data\SJDatabase.mdf" failed with the operating system error 5(error not found).
    Cannot attach the file 'C:\Users\myname\Documents\myname\Project\App_Data\SJDatabase.mdf' as database 'SJDatabase'.

connection string:

<connectionStrings>
        <add name="ApplicationServices" connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\aspnetdb.mdf;User Instance=true" providerName="System.Data.SqlClient"/>

    <add name="MyConsString" connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|SJDatabase.mdf;
                             Initial Catalog=SJDatabase;
                             Integrated Security=SSPI;"
                             providerName="System.Data.SqlClient" />
  </connectionStrings>

Answer 1

I think you are missing a backslash on |DataDirectory|\SJDatabase.mdf

also, you have Integrated Security=SSPI twice and I dont think you need the AttachDBFileName part

try something more simple like this:

"data source=ServerName;Initial Catalog=SJDatabase;Integrated Security=SSPI" providerName="System.Data.SqlClient"