Type or Namespace not found error while referencing Entity Framework namespace

[Dark_Hero]

I have added a ADO.Net Entity Data Model in my website and named it \[code\]WebSocketModel\[/code\]. Thus, all of its code has been generated inside the \[code\]name space WebSocketModel\[/code\] inside the \[code\]App Code\[/code\] folder.But now I am unable to reference this \[code\]namespace\[/code\]. I need to use the \[code\]context classes\[/code\] created inside this \[code\]namespace\[/code\] to fire \[code\]LINQ queries\[/code\].I tried to reference the \[code\]namespace\[/code\] through the \[code\]using WebSocketModel;\[/code\] statement inside my web form but am getting the error \[code\]The type or namespace name 'WebSocketModel' could not be found (are you missing a using directive or an assembly reference?)\[/code\]What is even more perplexing about this error is that whenever I type \[code\]using\[/code\] intellisense automatically suggests the namespace \[code\]WebSocketModel\[/code\]. However, later when I build my website, I get the aforementioned error.