Problems with LINQ and ToString() method

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C#

C#4.0

LINQ to Entities does not recognize the method 'System.String ToString()' method, and this method cannot be translated into a store expression


I'm using the following code :

using(var sd=new dataEntities())
{
var listofdata=sd.users.where(d=>d.id.ToString().Contain("2"));// id as int
// error : LINQ to Entities does not recognize the method 'System.String ToString()' method, and this method cannot be translated into a store expression.
}