2017-02-19 129 views
0

這裏是我的模型類ASP.NET MVC多選列表框沒有選擇多個值

public class OperationStudyInputViewModel 
{ 
    public IEnumerable<string> AttachmentId { get; set; } 
} 

這裏是我的控制器方法:

public ActionResult OperationStudyInput() 
{ 
    var attachmentList = _dbContext.AttachmentAndFolders 
     .Where(x => x.IsAttachementOrFolder == "Attachment") 
     .Select(x => new 
     { 
      x.AttchmentFolderId, 
      x.Name 
     }).ToList(); 
    ViewBag.AttachmentList = new MultiSelectList(attachmentList, "AttchmentFolderId", "Name"); 
} 

這裏查看:

<div class="input-group input-group-lg col-md-6"> 
    @Html.LabelFor(model => model.AttachmentId, htmlAttributes: new { @class = "input-group-addon" }) 
    @Html.ListBoxFor(model => model.AttachmentId,(MultiSelectList)ViewBag.AttachmentList) 
</div> 

MultiSelet文本框正在呈現正確,但它只選擇一個值,它不選擇多個值。

無法確定問題的實際位置!任何幫助請!

+0

你是什麼意思_selecting only value_? –

+0

它僅選擇一個值。如果我在選擇一個值後嘗試選擇另一個值,則以前的選擇正在丟失。 – TanvirArjel

+0

不相關,但建議您只使用'ViewBag.AttachmentList = dbContext.AttachmentAndFolders.Where(...)。Select(x => new SelectListItem {Value = x.AttchmentFolderId,Text = x.Name});'' @ Html.ListBoxFor(m => m.AttachmentId,(IEnumerable )ViewBag.AttachmentList)' –

回答

0

多選列表框要求您按住Ctrl鍵以選擇多個項目。