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POI can't get my Month, Day, Year dropdown lists to work from my ASP.NET MVC3 ViewModel
 

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  1. POI can't get my Month, Day, Year dropdown lists to work from my ASP.NET MVC3 ViewModel
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    <p>I'm converting over to MVC 3 from Webforms and have been having some trouble teaching myself. I created a ViewModel which should populate 3 separate select lists with Month, Day, Year values within my _Header. I think I have a structure issue. The end result is that I cause an unhandled exception in the www service on my machine and Visual Studio pops up and wants me to debug it. Any help would be greatly appreciated!</p> <p>Here's my code.</p> <p>DateSearchViewModel.cs</p> <pre><code>namespace DH.ViewModels { public class DateSearchViewModel { //MONTH DROPDOWN LIST public class MonthViewModel { public int ID { set; get; } public string Month { set; get; } } private List&lt;MonthViewModel&gt; _months; public List&lt;MonthViewModel&gt; Months { get { if (_months == null) { _months = new List&lt;MonthViewModel&gt;(); _months.Add(new MonthViewModel { ID = 1, Month = "Jan" }); _months.Add(new MonthViewModel { ID = 2, Month = "Feb" }); _months.Add(new MonthViewModel { ID = 3, Month = "Mar" }); _months.Add(new MonthViewModel { ID = 4, Month = "Apr" }); _months.Add(new MonthViewModel { ID = 5, Month = "May" }); _months.Add(new MonthViewModel { ID = 6, Month = "Jun" }); _months.Add(new MonthViewModel { ID = 7, Month = "Jul" }); _months.Add(new MonthViewModel { ID = 8, Month = "Aug" }); _months.Add(new MonthViewModel { ID = 9, Month = "Sep" }); _months.Add(new MonthViewModel { ID = 10, Month = "Oct" }); _months.Add(new MonthViewModel { ID = 11, Month = "Nov" }); _months.Add(new MonthViewModel { ID = 12, Month = "Dec" }); } return _months; } } public int SelectedMonthID { set; get; } //DAY DROPDOWN LIST public class DayViewModel { public int ID { set; get; } public string Day { set; get; } } private List&lt;DayViewModel&gt; _days; public List&lt;DayViewModel&gt; Days { get { if (_days == null) { _days = new List&lt;DayViewModel&gt;(); _days.Add(new DayViewModel { ID = 1, Day = "1" }); _days.Add(new DayViewModel { ID = 2, Day = "2" }); _days.Add(new DayViewModel { ID = 3, Day = "3" }); _days.Add(new DayViewModel { ID = 4, Day = "4" }); _days.Add(new DayViewModel { ID = 5, Day = "5" }); _days.Add(new DayViewModel { ID = 6, Day = "6" }); _days.Add(new DayViewModel { ID = 7, Day = "7" }); _days.Add(new DayViewModel { ID = 8, Day = "8" }); _days.Add(new DayViewModel { ID = 9, Day = "9" }); _days.Add(new DayViewModel { ID = 10, Day = "10" }); _days.Add(new DayViewModel { ID = 11, Day = "11" }); _days.Add(new DayViewModel { ID = 12, Day = "12" }); _days.Add(new DayViewModel { ID = 1, Day = "13" }); _days.Add(new DayViewModel { ID = 2, Day = "14" }); _days.Add(new DayViewModel { ID = 3, Day = "15" }); _days.Add(new DayViewModel { ID = 4, Day = "16" }); _days.Add(new DayViewModel { ID = 5, Day = "17" }); _days.Add(new DayViewModel { ID = 6, Day = "18" }); _days.Add(new DayViewModel { ID = 7, Day = "19" }); _days.Add(new DayViewModel { ID = 8, Day = "20" }); _days.Add(new DayViewModel { ID = 8, Day = "21" }); _days.Add(new DayViewModel { ID = 8, Day = "22" }); _days.Add(new DayViewModel { ID = 8, Day = "23" }); _days.Add(new DayViewModel { ID = 8, Day = "24" }); _days.Add(new DayViewModel { ID = 8, Day = "25" }); _days.Add(new DayViewModel { ID = 8, Day = "26" }); _days.Add(new DayViewModel { ID = 8, Day = "27" }); _days.Add(new DayViewModel { ID = 8, Day = "28" }); _days.Add(new DayViewModel { ID = 8, Day = "29" }); _days.Add(new DayViewModel { ID = 8, Day = "30" }); _days.Add(new DayViewModel { ID = 8, Day = "31" }); } return _days; } } public int SelectedDayID { set; get; } //YEAR DROPDOWN LIST public class YearViewModel { public int ID { set; get; } public string Year { set; get; } } private List&lt;YearViewModel&gt; _years; public List&lt;YearViewModel&gt; Years { get { if (_years == null) { _years = new List&lt;YearViewModel&gt;(); _years.Add(new YearViewModel { ID = 1, Year = "2009" }); _years.Add(new YearViewModel { ID = 2, Year = "2010" }); _years.Add(new YearViewModel { ID = 3, Year = "2011" }); _years.Add(new YearViewModel { ID = 4, Year = "2012" }); } return _years; } } public int SelectedYearID { set; get; } } } </code></pre> <p>CommonController.cs:</p> <pre><code>[ChildActionOnly] public ActionResult _Header() { DateSearchViewModel DateVM = new DateSearchViewModel(); return View(DateVM); } </code></pre> <p>_Header.cshtml:</p> <pre><code>@model DH.ViewModels.DateSearchViewModel @Html.DropDownListFor(x =&gt; x.SelectedMonthID, new SelectList(Model.Months, "ID", "Month"), "--Select--") @Html.DropDownListFor(x =&gt; x.SelectedDayID, new SelectList(Model.Days, "ID", "Day"), "--Select--") @Html.DropDownListFor(x =&gt; x.SelectedYearID, new SelectList(Model.Years, "ID", "Year"), "--Select--") </code></pre> <p>_Layout.cshtml:</p> <pre><code>@{Html.RenderAction("_Header", "Common");} </code></pre>
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    1. USMaddhacker24
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    1. This table or related slice is empty.
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    1. PO
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      1. POI can't get my Month, Day, Year dropdown lists to work from my ASP.NET MVC3 ViewModel
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    2. VO
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      1. POI can't get my Month, Day, Year dropdown lists to work from my ASP.NET MVC3 ViewModel
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    3. VO
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      1. POI can't get my Month, Day, Year dropdown lists to work from my ASP.NET MVC3 ViewModel
      1. USAcademy of Programmer
      1. VTFavorite
    1. COSee my DDL tutorial http://www.asp.net/mvc/tutorials/javascript/working-with-the-dropdownlist-box-and-jquery/using-the-dropdownlist-helper-with-aspnet-mvc and http://blogs.msdn.com/b/rickandy/archive/2012/01/09/cascasding-dropdownlist-in-asp-net-mvc.aspx If you can't figure it out after reading them, post the simplest possible repro. - Why do you have so much complexity for a web service code. DO something simpler.
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      1. POI can't get my Month, Day, Year dropdown lists to work from my ASP.NET MVC3 ViewModel
      1. USRickAndMSFT
    2. CONot your only problem but you shouldn't put that `Html.RenderAction` call inside a @{ } block. By doing so, you're just calling the method and discarding the result. Just call `@Html.RenderAction(...)`
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      1. POI can't get my Month, Day, Year dropdown lists to work from my ASP.NET MVC3 ViewModel
      1. USbhamlin
    3. COIt would help if you included the Exception, and what line of code the Exception occured on.
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      1. POI can't get my Month, Day, Year dropdown lists to work from my ASP.NET MVC3 ViewModel
      1. USErik Funkenbusch
 

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