Display(Return) validation message in catch block

Question

Hi,

In controller codei have used try and catch blocks 

coming to my requirement 

I have one model in that i have 2 fields named as Name,Code

In formi have entered  only Name 

after clicking of submitbutton it was throwing error 

everything is ok 

problem is that instead of displaying a cutsom error message in catch i need to display what type of exception raised in database

 

Could please kindly any one help me

Note:ifi can fill all the fields at that time it was saving to database properly 

In catch block instead of displaying something went wrong display what type of exception we raised.

Code

............ 

try

{

State state = new State();

state.Name = Name;

state.Code = st.Code;

db.State.Add(state);

db.SaveChanges();

dbContextTransaction.Commit();

}

catch (Exception)

{

dbContextTransaction.Rollback();

return "Something went wrong";

}