Returning a DataTable using Entity Framework ExecuteStoreQuery

Question

I am working with a system that has many stored procedures that need to be displayed. Creating entities for each of my objects is not practical.

Is it possible and

Answer 1

By the rule, you shouldn't use a DataSet inside a EF application. But, if you really need to (for instance, to feed a report), that solution should work (it's EF 6 code):

    DataSet GetDataSet(string sql, CommandType commandType, Dictionary parameters)
    {
        // creates resulting dataset
        var result = new DataSet();

        // creates a data access context (DbContext descendant)
        using (var context = new MyDbContext())
        {
            // creates a Command 
            var cmd = context.Database.Connection.CreateCommand();
            cmd.CommandType = commandType;
            cmd.CommandText = sql;

            // adds all parameters
            foreach (var pr in parameters)
            {
                var p = cmd.CreateParameter();
                p.ParameterName = pr.Key;
                p.Value = pr.Value;
                cmd.Parameters.Add(p);
            }

            try
            {
                // executes
                context.Database.Connection.Open();
                var reader = cmd.ExecuteReader();

                // loop through all resultsets (considering that it's possible to have more than one)
                do
                {
                    // loads the DataTable (schema will be fetch automatically)
                    var tb = new DataTable();
                    tb.Load(reader);
                    result.Tables.Add(tb);

                } while (!reader.IsClosed);
            }
            finally
            {
                // closes the connection
                context.Database.Connection.Close();
            }
        }

        // returns the DataSet
        return result;
    }