in web.config we have:
<configuration>
<system.web>
<compilation defaultLanguage="C#" ...

but when i create user control by Add->Web User Control it generated control with code behind in VB - need create control by Add->Add new Item and change language

The dialog to lookup regular expressions was a very hand thing in VS2010 but this seems to have been removed in VS2012.

As mentioned in Connect http://bit.ly/TKIOuq It would be great if Visual Studio 2012 show user a dialog explaning possible reasons to become unresponsive.

Developers do many repetitive tasks so if visual studio let you record a common task, then let you modify parts of it by adding wild cards or extra coded steps then save it for later use it would save lots of time. Then a developer can highlite text and apply the task. Then VS would run it on the selected text applying the rule .

When using the dark theme for VS 2012 11.0.50522.1 RCREL and I am adding a reference to my project in the 'Reference Manager' window. When I right click an assembly (either in Assemblies, COM, etc.) the popup I get will wash out the text 'Clear Recent References' (for example) when I hover over those popup items.
I suggest getting the coloring consistent.

Add Menu option Windows Split - SIDE by SIDE

Add ability to compare code SIDE by SIDE from within the same code file
Screens are getting wider not taller

This would be a great help to compare functions

Even to allow two copies of the same code file would be a help by enabling Window\New Window to make a duplicate

PS: Take a look at BeyondCompare by Scooter SW to see what a good code comparison tool looks like!

Server Explorer in vs11 has lost the ability to step into or debug SQL Server Stored Procedures, and why is Server Explorer in black/grey mode, while SQL SERVER OBJECT EXPLORER uses colour?

Now we write the source documentation using the XML Summary documentation tags. But there is no tool from MS to genarete a static html website, chm or a pdf. The doxygen is one tool which provides this.
Along with the source documentation we should also have capability to write the design summary of a component or a solution. So the developers can easily update the design document. Nee facility to embed images.
I would love to have the generated document commentable.

The Recent section of the Start Page is a convenient way to quickly open your project. It would be nice to have the ability to change the display name to help differentiate it from one project/solution to another. As an example, if you're working in a branch, the same solution name will appear twice in the list. Presently, I wait for the tooltip to pop-up to insure it's the right one I want.

Need a way to return back from Admin mode to regular user mode

When I added my solution (from Visual Studio 2010) to source control I created a top folder, but unawareness I click Enter before change the name (New folder) ; now it's impossible to rename that not mapped folder

I want to see class comments while hovering over the component of the class in class view, as it is available under NetBeans editor.

I have a discussion under forum, related to this idea, under the link: http://social.msdn.microsoft.com/Forums/en-US/csharpgeneral/thread/5045d81c-b690-4a64-86ee-c92739468439

As you can see in the image, as I hover over the members in the class browser (lower left - deleteOP function), it shows me comments in the popup. You can see same comments in the editor on the right hand side editor tab. I don't have to look for somewhere else for explanation.It could be immensely useful thing in my opinion.

In large solutions, I scroll a lot between different projects, folders with projects and folders inside projects to select the proper file. My idea is to add a crumble path for the solution to make navigation easier. The way it's implemented in Explorer would help a lot.

In vs 2012, the Query Builder window is too small, and never reopen with the last used size, forcing you to resize it every time.
Please just save the window size in the current user registry on closing.

I am FOREVER in Winforms application dev, scrolling back and forth in the properties window to get at the (Name) field

Can you lock it at the top so its always accessible (for use in cut/paste)

Please, add document object model (DOM) support for code files, change engine for snippet files to t4 code generator and let us work with source code DOM model from Macro Projects.
We need DOM, macro platform, snippets and t4 code generation work together, for example we need apply custom refactoring snippets from user defined macros with t4 code for particular functions in current document when inserting user defined snippet.

When we use Visual Studio IDE we observe that whenever we type a word and press Crtl + . (i.e options to help bind the selected item), we observe that IDE IntelliSense would not recognize that word as valid if our word does not match the case of the actual word, which is sort of inconvenience.

When exporting a project using the Export Project Template function, the exported project's web.config is replaced by a standard web.config. It would be good to have a checkbox in the Export Project Template dialog to permit the web.config to be copied or not, as is required.