Dynamic DBSet lookup and query - asp.net-mvc

Question

I have a partial result view that takes in the name of the table and a value for a particular column to query. I read the DBContext API and found that Set(Type) should return a DBSet that you can do CRUD operations on. I don't know how exactly to query the DBSet without a PK since the user don't know the PK to look up.
May be using Classic ADO would be easier?
EDIT: I figure out how to use DbSet.SQLQuery function but have no clue to store the results. I inspected the element in debugger and the SQLQuery does work as it found all the rows inside the table.
public class SF1DB : DbContext
{
//List of table names that feeds a DropDownList
public DbSet<tablelist> tables { get; set; }
//Data table
public DbSet<dataTable1> dataTable1 { get; set; }
public DbSet<dataTable2> dataTable2 { get; set; }
//...list of other tables
}
public PartialViewResult GetFeatures(String tablelist, String[] countyfp)
{
String type = "MvcApplication1.Models." + tablelist;
Type dbType = Type.GetType(type);
DbSet set = _db.Set(dbType);
String sql = "select * from " + tablelist;
//How do I store the result in a variable?
set.SqlQuery(sql);
return PartialView();
}

Answer 1

I figured it out by creating a List that have the same type as the DbSet that the user selected. Then I use the SQLQuery's GetEnumerator method and iterate thru the result and add to the new list. Finally, pass the list to the partial view.
public PartialViewResult GetFeatures(String tablelist, String[] countyfp)
{
String type = "MvcApplication1.Models." + tablelist;
Type dbType = Type.GetType(type);
DbSet set = _db.Set(dbType);
String sql = "select * from " + tablelist + " where ";
Type listType = typeof(List<>).MakeGenericType(dbType);
IList list = (IList)Activator.CreateInstance(listType);
for (int i = 0; i < countyfp.Length; i++)
{
sql += "cntyidfp like '%" + countyfp[i] + "'";
if (i < (countyfp.Length - 1))
{
sql += " or ";
}
}
IEnumerator result = set.SqlQuery(sql).GetEnumerator();
while (result.MoveNext())
{
list.Add(result.Current);
}
return PartialView(list);
}