ASP.NET从列表中选择对象
本文关键字:选择 对象 列表 NET ASP | 更新日期: 2023-09-27 18:29:36
我是ASP.NET的初学者,我不知道如何从列表中选择对象,例如我的模型中有静态数据:
namespace ProjectMVC.Models
{
public class Initializer
{
public List<Profile> GetProfiles()
{
var profile = new List<Profile>(){
new Profile {
Id = 2,
Name = "Henrik Crawford",
SportType = "Спортсмен",
Location = "Украина, Кременчуг"
},
new Profile {
Id = 3,
Name = "Diane McCartney",
SportType = "Спортсмен",
Location = "Украина, Кременчуг"
},
new Profile {
Id = 4,
Name = "William Jenkins",
SportType = "Спортсмен",
Location = "Украина, Кременчуг"
},
};
return profile;
}
}
我有一个ajax请求,它发送一个用户Id。为此,我在控制器中有操作结果:
namespace ProjectMVC.Controllers
{
public class HomeController : Controller
{
private readonly Initializer init = new Initializer();
public ActionResult AddUserAjax(int UserId)
{
List<Profile> SomeList = init.GetProfiles();
// here I want to select and return user from list , where UserId == Id from list in model
}
}
这应该做:
var user = SomeList.FirstOrDefault(u => u.Id == UserId)
它使用了LINQ,它在查询对象方面非常强大。
如果您想获得一个用户,只需使用Where
或FirstOrDefault
:
var user = SomeList.FirstOrDefault(u => u.Id == UserId);