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

问题描述

OK，我一直在谷歌上搜索了几个小时，并试图一切，不能得到任何工作。我使用MVC夏普建筑已经产生了创建客户端对象一些基本的学习形式。我想，以填补国家下拉列表中与美国各州的列表，并让用户从列表中选择。我能够填充列表，并得到值回（保存在客户端），但是当我去编辑的客户，不选择客户端的当前状态。我在选择列表的设置所选值：

 ＆LT;立GT;
    ＆LT;标签=Client_StateProvince＆GT; StateProvince：LT; /标签＆gt;
    ＆LT; D​​IV＆GT;
        ＆LT;％= Html.DropDownListFor（C =＆GT; c.Client.StateProvince，新的SelectList（Model.StateProvinces，ID，姓名，Model.Client.StateProvince） - 选择国家 - ）％ ＆GT;
    ＆LT; / DIV＆GT;
    ＆所述;％= Html.ValidationMessage（Client.StateProvince）％＆GT;
＆LT; /李＆GT;
 

这似乎并不足够好。我缺少什么？

解决方案

 ＆LT;％= Html.DropDownListFor（C =＆GT; c.Client.StateProvince.Id，
                              新的SelectList（Model.StateProvinces，
                                             ID，
                                             名称，
                                             Model.Client.StateProvince）
                               - 选择国家 - ）％GT;
 

该做的。

希望这可以帮助其他人。

〜利

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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