Asp.net-mvc – ASP MVC Areas and ActionLink

asp.net-mvcasp.net-mvc-areas

I'm working on a new project where I want to use Phil Haack Areas (1) idea + Steve Sanderson's tweak (2). I have a simple root view with an action link to a view an area (Foo). The URL that is generated has the proper area, but it appends the root controller (Bar) at the end. Here's my root view code:

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">

<h2>Index</h2>

<%= Html.ActionLink("Foo Index Page", "Index", new { area="Foo" } )%>

</asp:Content>

and here's the URL that it generates:

localhost:6494/Foo/Bar

Any idea why the "/Bar" is on there?

(1): haacked.com/archive/2008/11/04/areas-in-aspnetmvc.aspx

(2): blog.codeville.net/2008/11/05/app-areas-in-aspnet-mvc-take-2/

Best Answer

I've found a solution. I don't think it is appropriate, so I will ask for an improvement. By specifying a controller name, I can get the URL to form properly. I.E.

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">

<h2>Index</h2>

<%= Html.ActionLink("Foo Index Page", "Index", new { area="Foo", controller="Baz" } )%>

</asp:Content>

Once I did this, then the URL was correct

localhost:6494/Foo

Why is this a problem? Phil's demo uses the controller with the name HomeController. I don't know (because I can't trace) how the Html.ActionLink() method goes about constructing the URL; but it looks as if it is relying on a default case of HomeController existing, which I don't have.

If anyone has a suggestion on how to allow for Controllers not named Home to be the default, please reply. Thanks

Related Solutions

Asp.net-mvc – Compile Views in ASP.NET MVC

From the readme word doc for RC1 (not indexed by google)

ASP.NET Compiler Post-Build Step

Currently, errors within a view file are not detected until run time. To let you detect these errors at compile time, ASP.NET MVC projects now include an MvcBuildViews property, which is disabled by default. To enable this property, open the project file and set the MvcBuildViews property to true, as shown in the following example:

<Project ToolsVersion="3.5" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup>
    <MvcBuildViews>true</MvcBuildViews>
  </PropertyGroup>

Note Enabling this feature adds some overhead to the build time.

You can update projects that were created with previous releases of MVC to include build-time validation of views by performing the following steps:

Open the project file in a text editor.
Add the following element under the top-most <PropertyGroup> element: <MvcBuildViews>true</MvcBuildViews>
At the end of the project file, uncomment the <Target Name="AfterBuild"> element and modify it to match the following:

<Target Name="AfterBuild" Condition="'$(MvcBuildViews)'=='true'">
    <AspNetCompiler VirtualPath="temp" PhysicalPath="$(ProjectDir)\..\$(ProjectName)" />
</Target>

C# – How to create a dropdownlist from an enum in ASP.NET MVC

For MVC v5.1 use Html.EnumDropDownListFor

@Html.EnumDropDownListFor(
    x => x.YourEnumField,
    "Select My Type", 
    new { @class = "form-control" })

For MVC v5 use EnumHelper

@Html.DropDownList("MyType", 
   EnumHelper.GetSelectList(typeof(MyType)) , 
   "Select My Type", 
   new { @class = "form-control" })

For MVC 5 and lower

I rolled Rune's answer into an extension method:

namespace MyApp.Common
{
    public static class MyExtensions{
        public static SelectList ToSelectList<TEnum>(this TEnum enumObj)
            where TEnum : struct, IComparable, IFormattable, IConvertible
        {
            var values = from TEnum e in Enum.GetValues(typeof(TEnum))
                select new { Id = e, Name = e.ToString() };
            return new SelectList(values, "Id", "Name", enumObj);
        }
    }
}

This allows you to write:

ViewData["taskStatus"] = task.Status.ToSelectList();

by using MyApp.Common