我的项目是带有Razor页面的MVC.Net Core项目。
我的Dto班级:
public class TicketDto
{
public Guid Id { get; set; }
public IList<KeyValuePair<int, string>> Areas { get; set; }
}
在视图中,我使用@ Html.ListBoxFor创建选择列表] >>@Html.ListBoxFor(model => model.Areas, (MultiSelectList)ViewBag.AreaId, new { @class="custom-select", @id="inputGroupSelect01", size = 5 })
视图还具有ViewData / ViewBag:
ViewData["AreaId"] = new MultiSelectList(areaService.GetAreas().Select( a => new { a.Id, a.Name }), "Id", "Name");
剃刀渲染下一个:
<select class="custom-select" id="inputGroupSelect01" multiple="multiple" name="Areas" size="5"><option value="1">A</option>
<option value="2">P</option>
<option value="3">S</option>
<option value="10">AB</option>
<option value="11">AB</option>
</select>
控制者将TicketDto带到:
public IActionResult Create(TicketDto ticketDto)
当我选择多个项目并以POST形式控制ticketDto.Areas
计数= 0
我应该如何将具有List和@ Html.ListBoxFor
选择的模型类发布到我的控制器?我的项目是带有Razor页面的MVC.Net Core项目。我的Dto类:公共类TicketDto {public Guid Id {get;组; } public IList
Multiselectlist默认情况下将通过选定值的数组进行发布。如果要获取所有选定的项目,可以这样进行:
public class MyViewModel
{
public int[] SelectedIds { get; set; }
public IEnumerable<SelectListItem> Items { get; set; }
}
public IActionResult Index()
{
var data = new List<MyData>
{
new MyData() {Id = "2", Value = "P"}, new MyData() {Id = "3", Value = "S"},
new MyData() {Id = "10", Value = "AB"}
};
var model = new MyViewModel
{
Items = data.Select(x => new SelectListItem
{
Value = x.Id,
Text = x.Value
})
};
return View(model);
}
public IActionResult Create(MyViewModel model)
@using (Html.BeginForm("Create", "Home", FormMethod.Post))
{
@Html.ListBoxFor(x => x.SelectedIds, Model.Items)
<p><input type="submit" value="Submit" /></p>
}