Html.DropDownListFor() doesn't always render selected value
- by Andrey
I have a view model:
public class LanguagesViewModel
{
public IEnumerable<LanguageItem> Languages { get; set; }
public IEnumerable<SelectListItem> LanguageItems { get; set; }
public IEnumerable<SelectListItem> LanguageLevelItems { get; set; }
}
public class LanguageItem
{
public int LanguageId { get; set; }
public int SpeakingSkillId { get; set; }
public int WritingSkillId { get; set; }
public int UnderstandingSkillId { get; set; }
public LanguagesViewModel Lvm { get; internal set; }
}
It's rendered with the following code:
<tbody>
<% foreach( var language in Model.Languages ) { Html.RenderPartial("LanguageItem", language); } %>
</tbody>
LanguageItem.ascx:
<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<HrmCV.Web.ViewModels.LanguageItem>" %>
<tr id="lngRow">
<td class="a_left">
<%: Html.DropDownListFor(m => m.LanguageId, Model.Lvm.LanguageItems, null, new { @class = "span-3" }) %>
</td>
<td>
<%: Html.DropDownListFor(m => m.SpeakingSkillId, Model.Lvm.LanguageLevelItems, null, new { @class = "span-3" }) %>
</td>
<td>
<%: Html.DropDownListFor(m => m.WritingSkillId, Model.Lvm.LanguageLevelItems, null, new { @class = "span-3" })%>
</td>
<td>
<%: Html.DropDownListFor(m => m.UnderstandingSkillId, Model.Lvm.LanguageLevelItems, null, new { @class = "span-3" })%>
</td>
<td>
<div class="btn-primary">
<a class="btn-primary-l" onclick="DeleteLanguage(this.id)" id="btnDel" href="javascript:void(0)"><%:ViewResources.SharedStrings.BtnDelete%></a>
<span class="btn-primary-r"></span>
</div>
</td>
</tr>
The problem is that upon POST, LanguageId dropdown doesn't render its previously selected value. While all other dropdowns - do render. I cannot see any differences in the implementation between them. What is the reason for such behavior?
