namespace missing in asp.net web api. kindly help me out.

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using winwebapi.Models;

public ContactDetail Add(ContactDetail contact)
{

var addedContact = context.ContactDetails.Add(contact);
context.SaveChanges();
return addedContact;

}

hi here i am creating asp.net web api crud operations. can you see add function? it shows an error like follows

system.data.objects.objesctset<winwebapi.contactdetail>'does contain definition for Add and extension method 'Add' accepting a first argument type 'system.data.objects<winwebapi.contactdetail> could not be found (are you missing a using directive ro assembly reference?) i think i may miss namespace. so, pls help me why i got this error and how to solve?

Posted 12-Sep-13 1:11am

christhuxavier

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CodeBlack · Answer 1 · 2013-09-12T01:16:00

Solution 1

Try to use AddObject as mentioned below :

C#

context.ContactDetails.AddObject(contact);

Posted 12-Sep-13 1:16am

CodeBlack

v2

Comments

christhuxavier 12-Sep-13 7:35am

hi thank you for reply. i did what you said follows
context.ContactDetails.AddObject(contact);
context.SaveChanges();
return context;

but in return statemetn shows error like : cannnot implicitly converttype'winwebapi.chdbentities to winwebapi.contactdetail'

CodeBlack 12-Sep-13 7:45am

because your method expects contactdetail to be return not context.
retrun contact as mentioned below :

context.ContactDetails.AddObject(contact);
context.SaveChanges();
return contact;

christhuxavier 12-Sep-13 8:40am

hi we are allocating contact to context which is object. we can only retrun context not contact. if i do above you said, i