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zeeshan akram
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object Reference Not set to and Intense of an Object in mv5
Nov 3 2019 1:54 AM
I am using repository pattern in mvc 5 I have created the ICountry Interface and clsCountry class when run the project and put a break point then _ICountry.listofCountry() throw the error "Object reference not send to an Instance". Any expert can tell me where i am wrong . I am using Database first approch and my db extension is .edmx
Model Countries
public
int
CountryID {
get
;
set
; }
public
string
CountryName {
get
;
set
; }
IcountryRepository
public
interface
ICountry {
List<Countries> listofCountry();
}
clsCountryRepository
public
class
clsCountry: ICountry {
ECommercedbEntities _db;
public
clsCountry(ECommercedbEntities db) {
_db = db;
}
public
List < Countries > listofCountry() {
return
_db.Countries.ToList();
}
}
Controller
public
class
AccountController: Controller {
ICountry _ICountry;
public
AccountController(ICountry ICountry) {
_ICountry = ICountry;
}
[HttpGet]
public
ActionResult Registration() {
try
{
List < Countries > listCountry = _ICountry.listofCountry();
ViewBag.CountryList =
new
SelectList(listCountry,
"CountryID"
,
"CountryName"
);
return
View();
}
catch
(Exception ex) {
throw
ex;
}
}
}
AppStart
public
static
class
UnityConfig {
public
static
void
RegisterComponents() {
var container =
new
UnityContainer();
container.RegisterType < ILogin, clsLogin > ();
container.RegisterType < ICountry, clsCountry > ();
DependencyResolver.SetResolver(
new
UnityDependencyResolver(container));
}
}
Global.asax
protected
void
Application_Start()
{
UnityConfig.RegisterComponents();
}
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