Ajax Calling for more than 3 dropdowns (MVC )

https://www.aspsnippets.com/Articles/Cascading-Dependent-DropDownList-in-ASPNet-MVC.aspx

https://learn.microsoft.com/en-us/answers/questions/216632/cascading-dependent-dropdownlist-using-aspnet-mvc.html

Hi, 

Please find below link which will help you, 

https://www.c-sharpcorner.com/Forums/ajax-calling-for-more-than-3-dropdowns-mvc

https://www.aspsnippets.com/Articles/AJAX-Cascading-DropDown-Example-in-ASPNet.aspx

Hello R D,

The functionality you are looking for is known as cascading dropdown. 

You can check below article for the same:

https://www.c-sharpcorner.com/UploadFile/4d9083/creating-simple-cascading-dropdownlist-in-mvc-4-using-razor/

select country



select state



select city



select Town

step 2. 

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MVC methods

public ActionResult GetAllCountries()
{
 // return list of countries
 var list= _context.Countries.ToList();
return Json(list,JsonRequestBehavior.AllowGet);
}

public ActionResult GetStateByCountry(int countryId)
{
 // return list of countries
 var list= _context.States.Where(x=>x.CountryId==countryId).ToList();
return Json(list,JsonRequestBehavior.AllowGet);
}

public ActionResult GetCityByState(int stateId)
{
 // return list of countries
 var list= _context.Cities.Where(x=>x.StateId==stateId).ToList();
return Json(list,JsonRequestBehavior.AllowGet);
}

public ActionResult GetTownByCity(int cityId)
{
 // return list of countries
 var list= _context.Towns.where(x=>x.CityId==cityId).ToList();
return Json(list,JsonRequestBehavior.AllowGet);
}

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