c# - How to handle lots of derived model with only one controller -

i using asp.net mvc , have several model classes derived parent object. want handle of these models in 1 controller action since identical exception of data fields. want save them database. how can achieve such behavior?

example:

    class parentmodel {...}     class childmodel1 : parentmodel {...}     class childmodel2 : parentmodel {...}     class childmodel3 : parentmodel {...}     class childmodel4 : parentmodel {...}      public class modelcontroller : controller     {         //but want handle child objects         //and add them automatically database.         public actionresult add(parentmodel model)         {             db.parentmodel.add(model);         }     } 

you should create viewmodel class such :

public class viewmodel      {         public childmodel1 childmodel1 { get; set; }         public childmodel2 childmodel2 { get; set; }         public childmodel3 childmodel3 { get; set; }         public childmodel4 childmodel4 { get; set; }     } 

then create object of view model:

viewmodel v = new viewmodel(); 

now can add child model view model:

v.childmodel1 = yourchildmodel1; v.childmodel2 = yourchildmodel2; v.childmodel3 = yourchildmodel3; v.childmodel4 = yourchildmodel4; 

now can pass model.