asp.net mvc - how to refresh the context in entity framework 7? -

how refresh context in entity framework 7 using asp.net 5. data stored procedure does't have result on time code load stored procedure

 private dbset<featurereport> dbfeaturereport { get; set; }  internal ienumerable<featurereport> getfeaturereport()     {                                 return dbfeaturereport.fromsql("exec [dbo].[featurereport]");     }