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这里是我的模型类ASP.NET MVC多选列表框没有选择多个值
public class OperationStudyInputViewModel
{
public IEnumerable<string> AttachmentId { get; set; }
}
这里是我的控制器方法:
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");
}
这里查看:
<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文本框正在呈现正确,但它只选择一个值,它不选择多个值。
无法确定问题的实际位置!任何帮助请!
你是什么意思_selecting only value_? –
它仅选择一个值。如果我在选择一个值后尝试选择另一个值,则以前的选择正在丢失。 – TanvirArjel
不相关,但建议您只使用'ViewBag.AttachmentList = dbContext.AttachmentAndFolders.Where(...)。Select(x => new SelectListItem {Value = x.AttchmentFolderId,Text = x.Name});'' @ Html.ListBoxFor(m => m.AttachmentId,(IEnumerable)ViewBag.AttachmentList)' –