当在MVC中选择国家/地区时，jquery将在下拉列表中绑定状态 [英] jquery to bind states in dropdown when country is selected in MVC

问题描述

jquery在注册用户时从MVC 4中的另一个下拉列表中选择国家时绑定下拉状态..



我在一个列表中有州名称 stateList通过功能GetStatesList从下拉列表中选择国家名称



[HttpPost]

[AllowAnonymous]

public ActionResult GetStatesList（int countryid）

{

TracFindDALContainer tracFindStates = null;

List< registermodel> stateList = null;

尝试

{

使用（tracFindStates = new TracFindDALContainer（））

{

var statebind =（来自tracFindStates.States中的s

在s.Id上的tracFindStates.Countries中加入c等于c.Id

其中s.CountryID == countryid

选择新的RegisterModel

{

Stateid = s.Id，

StateName = s.StateName }）;



if（statebind == null）

返回Json（null）;

stateList = （List< registermodel>）statebind.ToList（）;

返回Json（stateList）;



}

}

catch（例外情况）

{

LogManager。 WriteErrorLog（ex）;

objStringBuilder.Clear（）;

objStringBuilder.AppendLine（Start：StateList，StateList Method）;

objStringBuilder .Append（ex.Message）;

LogManager.WriteTraceLog（objStringBuilder）;

返回null;

}



}



但是thruogh jquery我没有得到停机状态..



Plz帮助...

jquery to bind states in dropdown when country is selected from another dropdown in MVC 4 while registering user..

I have got the states name in one list "stateList" while selecting country name from dropdown through the function "GetStatesList"

[HttpPost]
[AllowAnonymous]
public ActionResult GetStatesList(int countryid)
{
TracFindDALContainer tracFindStates = null;
List<registermodel> stateList = null;
try
{
using (tracFindStates = new TracFindDALContainer())
{
var statebind = (from s in tracFindStates.States
join c in tracFindStates.Countries on s.Id equals c.Id
where s.CountryID == countryid
select new RegisterModel
{
Stateid =s.Id,
StateName =s.StateName });

if (statebind == null)
return Json(null);
stateList = (List<registermodel>)statebind.ToList();
return Json(stateList);

}
}
catch (Exception ex)
{
LogManager.WriteErrorLog(ex);
objStringBuilder.Clear();
objStringBuilder.AppendLine("Start: StateList, StateList Method");
objStringBuilder.Append(ex.Message);
LogManager.WriteTraceLog(objStringBuilder);
return null;
}

}

but thruogh jquery I am not getting states in doropdown..

Plz help...

推荐答案

试试这个链接

http://blogs.msdn.com/b/rickandy/archive/2012/01/09 /cascasding-dropdownlist-in-asp-net-mvc.asp x [ ^ ]

希望这有帮助

Try this link
http://blogs.msdn.com/b/rickandy/archive/2012/01/09/cascasding-dropdownlist-in-asp-net-mvc.aspx[^]
Hope this helps

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