DBContext Native SQL Queries

问题

How to use native queries with DBContext ? If I run the code, this give me exception. Why and what to do to run native query when using DBContext ?

AcademyEntities context = new AcademyEntities();

            string nativeSQLQuery =
                "SELECT * " +
                "FROM dbo.Employees " +
                "WHERE FirstName='{0}'";

            string name = "Guy";

            var emp = context.Departments.SqlQuery(nativeSQLQuery, name);

            foreach (var item in emp)
            {

            }

回答1:

You're querying the Employees table, but trying to materialize Department objects.

Change your call to:

var emp = context.Employees.SqlQuery(nativeSQLQuery, name);

( and remove the quotes round the {0} )

回答2:

You are querying Employees, so you should use context.Employees:

var emp = context.Employees.SqlQuery(nativeSQLQuery, name);

来源：https://stackoverflow.com/questions/14444684/dbcontext-native-sql-queries