how to avoid wwwroot in connectionstring ?

 Hi
my connection string was 
<add name="test_connectionstring" connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=C:\initpub\wwwroot\test\App_Data\Database.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True" providerName="System.Data.SqlClient"/>
I removed, C:\initpub\wwwroot as when i will upload my project for hosting, server will not understand C:\initpub\wwwroot 
But it gives error . So what should be path when i will host it ??? 
 
EVEN \App_Data\Database.mdf  GIVES ERROR .   

I dont know why AttachDbFilename=\App_Data\Database.mdf should have problem ...( AS IT INDICATES CHECK FOR APP_DATA INSIDE ROOT DIRECTORY )

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