title: C#-The database cannot be opened because it is version 706
body: <p>I am trying to connect but get error</p>
  
  <blockquote>
    <p>The database cannot be opened because it is version 706. This server supports version 655 and earlier. A downgrade path is not supported</p>
  </blockquote>
  
  <p>My SQL Version : </p>
  
  <pre><code>Microsoft SQL Server 2012 - 11.0.2100.60 (X64) 
  Copyright (c) Microsoft Corporation
  Express Edition (64-bit) on Windows NT 6.1 &lt;X64&gt; (Build 7601: Service Pack 1)
  </code></pre>
  
  <p>My connection string :</p>
  
  <pre><code>"Server=.\\SQLExpress;AttachDbFilename=" + datasource + ";Trusted_Connection=Yes;User Instance=True;"
  </code></pre>
  
  <p>Why is it not connecting? I transferred from x86 to x64 system and installed same software which were on x86.The software I installed are x64 based.</p>