如何从mvc3中的下拉列表中获取值 [英] How To get value from drop down list in mvc3

问题描述

大家好



i我想从下拉列表中选择一个值



1st have have使用FormCollection从表单中获取所有输入值，从现在我想要取得所选下拉列表的值



直到我完成



我的cshtml是我的复选框和下拉列表

 <   td  >  <  输入    type   = 复选框    name   = 'chk#'@item.CountryDetails.CountryId     id   = 'chk#'@item.CountryDetails.CountryId       /  >  <   / td  >  
 <   td  >  <  选择    id   = ' DRP＃'@ item.CountryDetails.CountryId    name   = 'DRP#'@item.CountryDetails.C ountryId >  <   option     value   =  null >   - 选择时间 -  <   / option  >  
 <  选项    value   = 每月 > 每月<   / option  >  
 < span class =code-keyword><  选项    value   =  year > 每年<   / option  >  

控制器我写的是

列表schObj =  new  List（）;  //  这是在模型中创建类 
调度WSH =  new  Scheduling（）; 
 
  for （ int  i =  0 ; i <  form.Count; i ++）
 {
 
  if （form [i] ==   on）
 {
 WSH.Scheduled =  true ; 
  string  CID = form.AllKeys [i]; 
  string  [] splitnum =  null ; 
 splitnum = CID.Split（' ＃'）; 
 CID = splitnum [ 1 ]。ToString（）; 
 CID = CID.Replace（ '， ）; 
 WSH.CountryId = Convert.ToInt64（CID）; 
 
 schObj.Add（WSH）; 
} 

现在我想从下拉列表中获取所选值

解决方案

您可以使用formcollection从下拉列表中获取选定的值

示例：

 public ActionResult Create（FormCollection collection）
 { 
 try 
 {
 int Country = Convert.ToInt32（collection [Country]）; 
 int State = Convert.ToInt32（collection [State]）; 
 int City = Convert.ToInt32（collection [City]）; 
返回RedirectToAction（Index）; 
} 
 catch 
 {
 return View（）; 
} 
} 
 

凡是集合[国家]，国家/地区是下拉列表控制ID等

Hi Everyone

i am trying to get a selected value from drop down list

1st have taken all inputs value from form using FormCollection in that from the from id now i want take the value of the selected dropdown list

till i have done

my cshtml is i have check box and dropdown list

<td><input type="checkbox" name="'chk#'@item.CountryDetails.CountryId" id="'chk#'@item.CountryDetails.CountryId"  /></td>
                                  <td><select id="'DRP#'@item.CountryDetails.CountryId" name="'DRP#'@item.CountryDetails.CountryId"><option value="null">--Select time--</option>
                                  <option value="monthly">Monthly</option>
                                  <option value="yearly">Yearly</option>

in controller i ma writing

List schObj = new List();// this is the created Class in model
Scheduling WSH = new Scheduling();

for (int i = 0; i < form.Count; i++)
{

if (form[i] == "on")
{
WSH.Scheduled = true;
string CID = form.AllKeys[i];
string[] splitnum = null;
splitnum = CID.Split('#');
CID = splitnum[1].ToString();
CID = CID.Replace("'", "");
WSH.CountryId = Convert.ToInt64(CID);

schObj.Add(WSH);
}

now i want get the selected value from dropdown list

解决方案

You can get selected value from dropdownlist using formcollection
Example:

public ActionResult Create(FormCollection collection)
      {
          try
          {
               int Country = Convert.ToInt32(collection["Country"]);
               int State = Convert.ToInt32(collection["State"]);
               int City = Convert.ToInt32(collection["City"]);
              return RedirectToAction("Index");
          }
          catch
          {
              return View();
          }
      }

Where collection["Country"], Country is dropdown Control ID etc

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