Visual Studio – Lost nesting of codebehind

We’ve all had times when we’ve created an ASP.NET webpage and then a new page is required with almost identical functionality.

I had that task today and so making things simple I copied the current files, pasted them and made the necessary changes to hook the designer and code-behind files to the aspx page.

This works perfectly. The code builds, the page runs, everything happens as I expected it to.

Then I noticed a little quirk in Visual Studio 2008. One of the great features of Visual Studio is the way in which it visually nests code-behind files in the Solution Explorer under your aspx file.

After making a copy of my origional page I noticed that my code-behind was left astray. I checked all the references to make sure everything was hooked up correctly but still, my code-behind wasn’t nesting nicely under my aspx page as usual.

Now I’m sure many people have come across this problem before however this was a first for me.

It turns out that the references are stores in the csproj file. There is a reference to the code-behind file and a list of dependancies. By default, when doing a copy/paste of files outside of Visual Studio, this reference is not updated and the code-behind file doesn’t attach itself to the aspx file in the Solution Explorer.

The solution is to simply add a reference to the dependant aspx fie in the csproj file like so:

<Compile Include="myShinyNewFile.aspx.cs">
<DependentUpon>myShinyNewFile.aspx</DependentUpon>
<SubType>ASPXCodeBehind</SubType>
</Compile>

Once you’ve added the second line into the csproj file, restarting visual studio brings back the much loved nesting.

Global Resource strings by property

Every now and then I come across a bunch of string literals littered through out some code and begin the task of moving them out into their own resource file (.resx).

Gaining access to these strings from C# is pretty easy however I’m yet to find anywhere explaining it the way I find simplest.

Assuming your resx file is stored in the App_GlobalResources folder, you can basically assign your resource file to a variable in your C# using the following syntax:

using Res = Resources.MyResourceFile

This then gives you the ability to referene the contents of the resource file as properties in your code.

string x = Res.OneOfMyStringNames;

Microsoft ASP.NET MVC

Microsoft ASP.NET MVC is the latest technology from Microsoft that has been built on top of the ASP.NET 3.5 framework.

Microsoft Says:

ASP.NET MVC enables you to build Model View Controller (MVC) applications by using the ASP.NET framework. ASP.NET MVC is an alternative, not a replacement, for ASP.NET Web Forms that offers the following benefits:

• Clear separation of concerns
• Testability – support for Test-Driven Development
• Fine-grained control over HTML and JavaScript
• Intuitive URLs

Source: http://www.asp.net/mvc/

There’s a lot to be said about ASP.NET MVC and so far, I’m only just scratching the surface of what’s possible with this new technology.

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