Question

我的mvc控制器中有一个字典并存储了值，所以我想用视图显示这些值。

我的代码

 public List<Dictionary<string, string>> getalllocation()
     {
        var locs = new List<Dictionary<string, string>>();
        try
         {
            DataTable dt1 = new DataTable();
            string connString = cnst.cnstrin();
            string query = "SELECT * FROM `Mytable`.`location`";
            MySqlDataAdapter ma = new MySqlDataAdapter(query, connString);
            DataSet DS = new DataSet();
            ma.Fill(dt1);

            foreach (DataRow drow in dt1.Rows)
             {
               Dictionary<string, string> dictionary = new Dictionary<string, string>();
               dictionary.Add("id", drow["LocationId"].ToString());
               dictionary.Add("name", drow["LocationName"].ToString());
               locs.Add(dictionary);
             }
           }
        catch (MySqlException e)
         {
           throw new Exception(e.Message);
         }
        return locs;
      }

我的观点

@{
  List<Dictionary<string,string>>locations=((HomeController)this.ViewContext.Controller).getalllocation();
  }
 <select name="select_item" id="select-sort" class="select__sort" tabindex="0">

                @for (int i=0;i<locations.Count;i++)
                {
                    if((i==0)&&(ViewBag.location==null))
                    { }
                 }
         <option value="1" selected='selected'>@locations</option>//I need to display here
                 </select>

现在我无法显示值，但数据位于location.Any idea？

Answer 1

您可以实施以下帮助：

<select name="select_item" id="select-sort" class="select__sort" tabindex="0">
    @GenerateSelect(locations)    
</select>

然后使用它：

public class Location
{
    public int Id { get; set; }
    public string Name { get; set; }
}

然而，正如其他人已经提到的那样，使用带有预定义键的词典是一种非常糟糕的方法。

您可以创建一个新类：

List<Location>

生成public List<Location> GetAllocation() { try { DataTable dt1 = new DataTable(); string connString = cnst.cnstrin(); string query = "SELECT * FROM `Mytable`.`location`"; MySqlDataAdapter ma = new MySqlDataAdapter(query, connString); DataSet DS = new DataSet(); ma.Fill(dt1); return dt1.AsEnumerable().Select(row => new Location { Id = row["LocationId"], Name = row["LocationName"] }); } catch (MySqlException e) { throw new Exception(e.Message); } }：

select

将其传递给您的模型视图，并生成@model List<Location> <select name="select_item" id="select-sort" class="select__sort" tabindex="0"> @foreach (var loc in Model) { <option value="@loc.Id">@loc.Name</option> } </select>：

$login=$this->Login_set->set_pass();          
if(count($login) > 0){
    $this->load->view('App_stay/pages/profile');
}else{
    $this->load->view('App_stay/App_stay_login');
}

如何使用mvc视图显示字典值

1 个答案: