填充 ASP.NET MVC DropDownList [英] Populating ASP.NET MVC DropDownList

问题描述

好的，我已经在谷歌上搜索了几个小时并尝试了一切，但没有任何结果.我正在使用 Sharp Architecture 学习 MVC，并生成了一些用于创建 Client 对象的基本表单.我想用美国州的列表填充州下拉列表，并让用户从该列表中进行选择.我能够填充列表并取回值(以保存客户端)但是当我去编辑客户端时，客户端的当前状态未被选中.我已经在 SelectList 中设置了选定的值:

<label for="Client_StateProvince">StateProvince:</label><div><%= Html.DropDownListFor(c=>c.Client.StateProvince, new SelectList(Model.StateProvinces, "id", "Name", Model.Client.StateProvince), "-- 选择状态 --")%>

<%= Html.ValidationMessage("Client.StateProvince")%>

这似乎还不够好.我错过了什么?

解决方案

<%= Html.DropDownListFor(c => c.Client.StateProvince.Id,新的 SelectList(Model.StateProvinces,ID"，名称"，模型.Client.StateProvince),"-- 选择状态--")%>

这样做.

希望这对其他人有帮助.

~李

OK, I've been Googling for hours and trying everything and can't get anything to work. I am learning MVC using Sharp Architecture and have generated some basic forms for creating Client objects. I want to fill the state drop down list with a list of US states and let the user pick from that list. I am able to populate the list and get the value back (to save the client) but when I go to edit the client, the client's current state is not selected. I have set the selected value in the SelectList:

<li>
    <label for="Client_StateProvince">StateProvince:</label>
    <div>
        <%= Html.DropDownListFor(c=>c.Client.StateProvince, new SelectList(Model.StateProvinces, "id", "Name", Model.Client.StateProvince), "-- Select State --")%>
    </div>
    <%= Html.ValidationMessage("Client.StateProvince")%>
</li>

This does not seem to be good enough. What am I missing?

解决方案

<%= Html.DropDownListFor(c => c.Client.StateProvince.Id, 
                              new SelectList(Model.StateProvinces, 
                                             "id", 
                                             "Name", 
                                             Model.Client.StateProvince), 
                              "-- Select State --")%>

This does it.

Hope this helps someone else.

~Lee

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