MVC3中的Ajax請求

Question

我是Ajax新手，我試圖用jquery調用ajax調用從數據庫中獲取數據。

我國標籤的列表，我試圖當有用戶操作

這裏是我的代碼示例，在跟它有一個空的系統參考的時刻來顯示數據。

public ActionResult Details(int id, string searchTerm) 
     { 
      // Do we have a search term 
      if (!String.IsNullOrEmpty(searchTerm)) 
      { 
       // decode the searchTerm as we dont want to search for encoded bits 
       searchTerm = Decode(searchTerm); 
      } 
     var a = _mRepository.GetMyId(id); 
     if (a == null) 
     { 
      return View("NotFound"); 
     } 


     // Here we need to get list of countries for the selected manufacturer 

     var c = _mwRepository.Getcountries(id); 

     ViewData["Countries"] = c.ToArray(); 



     // Now we need list of products for the manufacturer countries and this is an Ajax call to database so that it fetches data only when there is a user action 
     foreach (var country in c) 
     { 
      var p = _productRepository.GetAllCurrentProductsForManufacturerCountry(id, 
       country.Id); 

     } 
      if(Request.IsAjaxRequest()) 
      { 
            ViewData["ManufacturerCountryProducts"] = 

            p.ToArray(); 
      } 

Answer 1

public class CountryProducts 
{ 
    public Country Country { get; set; } 
    public List<Product> ProductsList { get; set; } 
} 

[HttpPost] 
public ActionResult Details(int id, string searchTerm) 
{ 
    // Do we have a search term 
    if (!String.IsNullOrEmpty(searchTerm)) 
    { 
     // decode the searchTerm as we dont want to search for encoded bits 
     searchTerm = Decode(searchTerm); 
    } 
    var a = _mRepository.GetMyId(id); 
    if (a == null) 
    { 
     return View("NotFound"); 
    } 

    // Here we need to get list of countries for the selected manufacturer 
    List<Country> countriesList = _mwRepository.Getcountries(id); 

    var data = new List<CountryProducts>(); 
    if (countriesList != null) 
    { 
     foreach (var country in countriesList) 
     { 
      List<Product> products = _productRepository.GetAllCurrentProductsForManufacturerCountry(id, 
                            country.Id); 
      data.Add(new CountryProducts() {Country = country, ProductsList = products}); 
     } 
    } 

    if (Request.IsAjaxRequest()) 
    { 
     ViewData["CountryProducts"] = data.ToArray(); 
    } 
} 

但我對AJAX的使用兩種不同的方法，如：

public ActionResult Details(int id) 
{ 
    ... 
    return View(model); 
} 

//for ajax request: 
[HttpGet] 
public JsonResult Details(int id, string searchTerm) 
{ 
    return new JsonResult() 
       { 
        JsonRequestBehavior = JsonRequestBehavior.AllowGet, 
        Data = GetFilteredDetailsData(id, searchTerm) 
       }; 
}