dropdownlistfor - 从ienumerable模型中选择不同的列 [英] dropdownlistfor - select distinct column from ienumerable model

问题描述

我必须在Dropdownlistfor中填充**不同的**公司名称来自



@model IEnumerable< zykod.data .models.cutilitymodel>

我试过以下方式。什么都行不通。感谢您的帮助。



1. @ Html.DropDownListFor（Model.Select（i => i.CompanyName）.Distinct（）。ToList（），new List< SelectListItem>（），new {@class =input-large form-control}）



2. @ Html.DropDownList（CompanyName，new SelectList（Model）.Distinct（））



3. @ Html.DropDownListFor（model => model.CompanyName，new List< SelectListItem>（），new { @class =input-large form-control}）



谢谢

Karthey

Hi ,
I have to populate **distinct** company name in Dropdownlistfor from

@model IEnumerable<zykod.data.models.cutilitymodel>
I tried the following way. Nothing is working. Your help is appreciated.

1. @Html.DropDownListFor(Model.Select(i => i.CompanyName).Distinct().ToList(), new List<SelectListItem>(), new { @class = "input-large form-control" })

2. @Html.DropDownList("CompanyName", new SelectList(Model).Distinct())

3. @Html.DropDownListFor(model => model.CompanyName, new List<SelectListItem>(), new { @class = "input-large form-control" })

Thanks
Karthey

推荐答案

尝试这样的事情：

Try something like this:

@Html.DropDownListFor(model => model.CompanyName, new SelectList(Model.Select(i => i.CompanyName).Distinct()), new { @class = "input-large form-control" })

我试过并且

got the following error:
<pre lang="xml">CS1061: &#39;System.Collections.Generic. CS1061: &#39;System.Collections.Generic.IEnumerable&lt;Zykod.Data.Models.CUtilityModel&gt;&#39;
does not contain a definition for &#39;CompanyName&#39; and no extension method &#39;CompanyName&#39; accepting a first
argument of type &#39;System.Collections.Generic.IEnumerable&lt;Zykod.Data.Models.CUtilityModel&gt;&#39; could be found
(are you missing a using directive or an assembly reference?) &#39; does not contain a definition for &#39;CompanyName&#39;
 and no extension method &#39;CompanyName&#39;
accepting a first argument of type &#39;System.Collections.Generic.IEnumerable&lt;Zykod.Data.Models.CUtilityModel&gt;&#39;
could be found (are you missing a using directive or an assembly reference?)</pre>

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