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POasp.net mvc 3 EF HTML MultiSelect - How to retrieve multiple values using LINQ
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I have an Advanced Search form, It contains, input boxes, dropdown lists, etc. And now I want to change a dropdown list to a multiselect list. I can set the view, like this: <pre><code>@Html.ListBoxFor(model => model.IdState, null, new { size = "7" }) </code></pre> But I don't know how to change the controller from: <pre><code>public ActionResult Index(FormData model) { IQueryable<mytable> results = from s in db.mytable.Include("State").where(s=> (model.IdState != null ? s.IdState == model.IdState : true)) select s; return View(result); } </code></pre> To a multiple IdState Result??? Earlier the IdState was: <pre><code>int IdState; </code></pre> Now is: <pre><code>IEnumerable<int> IdState; </code></pre> Thanks for your time! I still can't make it work. In SQL will be: <pre><code>SELECT * FROM MyTable WHERE IdState IN (1,2,5,7,10) </code></pre> Any Idea? The <a href="http://msdn.microsoft.com/en-us/vcsharp/aa336746.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/vcsharp/aa336746.aspx</a> Don't show similar situation Workaround I found on this discussion: <a href="http://social.msdn.microsoft.com/forums/en-US/adodotnetentityframework/thread/095745fe-dcf0-4142-b684-b7e4a1ab59f0/" rel="nofollow">http://social.msdn.microsoft.com/forums/en-US/adodotnetentityframework/thread/095745fe-dcf0-4142-b684-b7e4a1ab59f0/</a> this code snippet: <pre><code>IQueryable<Foo> foos = context.Foo.Where("it.Id in {1, 2, 3, ...}"); </code></pre> I changed to <pre><code>string sState = ""; foreach (int a in model.IdState ) sState += (a.ToString() + ","); sState = sState .Substring(0, sState .Length - 1); IQueryable<mytable> results = from s in db.mytable.Where("it.IdState in {" + sState + "}"); </code></pre> And It works great!!! I hope can find the final solution
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<linq><entity-framework><asp.net-mvc-3><multi-select>
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asp.net mvc 3 EF HTML MultiSelect - How to retrieve multiple values using LINQ
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.