Solution file vs. Project file in Visual Studio - visual-studio

Can someone briefly explain to me the difference between Visual Studio's solution file (.sln) and project file (.vcproj).
It seems to me opening either one open the correct solution/project in Visual Studio. Is one the super-set of the other?
Note: I am currently using Visual Studio 2008 working on a project that was brought forward from Visual Studio 2005 (I believe).

A solution is a set of projects. If you need more than one project in your software, then go with solutions. I.E.: A Class Library Project + A Web Application Project.

A project file typically corresponds to a single module: EXE or DLL or LIB. A solution manages a collection of project files.

A solution is a collection of projects. Visual Studio is made so that it cannot function without a solution, so if you open a bare project, it will generate the solution automatically (or try to find one).

One solution can contain zero or more projects. Everything is in projects, so a solution with zero projects doesn't contain anything at all besides the solution properties.
Visual studio keeps track of where the projects are used, so if you open a project file, it will open (IIRC) the last solution where it was used.
When you create a project from scratch, a solution is also created, but it's not shown until you add another project to it. It looks like you have only the project open, but it's actually a solution containing the project that is open.

Specifically project files are intended to contain the data required to build the files in the project into an exe or dll. This file is utilized by the local compilers or with systems such as Team Foundation system and server side build agents.
Solutions are a client (IDE) construct designed to manage collections of projects, which in effect is a collection of different build definitions and associated files.

Solution files are typically made up of multiple project files.

Related

How to stop Visual Studio from setting a new project to build in all configurations

I have a solution with a large number of solution level build configurations. Whenever I add a project to this solution, Visual stuido changes all of my configurations to build the new project. Is there a way to stop VS from doing this, or am I stuck reconstructing all my build configurations every time I add a new project to the solution?
I don't know of any solution within visual studio but you could do it by hand rather easily. Project files are simply xml files and solution files are text-based as well (and rather simple structured).
If you know how to handle MSBuild files (i.e. project files) you can even simplify them if you have many configurations.
This is the msdn article for MSBuild:
https://msdn.microsoft.com/en-us/library/wea2sca5(v=vs.90).aspx

How to open two Solution in one Visual Studio IDE?

I am working on two different solutions, say, Solution1 and Solution2. As these two solutions are dependent upon each other, I have to open two separate Visual Studio while developing.
It is really difficult to switch between these Visual Studio. I can't merge these two solutions into one as Solution1 is being used by other projects and all are part of Source Control.
Just wondering, can I open both solutions in the same Visual Studio IDE? I searched a lot but no luck. Any suggestions on existing VS AddIn or how to develop it would also be helpful.
Visual Studio version - 2012 Ultimate
Source Control - TFS
Create a third Solution C than includes project from both A and B: you can keep C as a local file i.e. you don't check it in version control if this can disturb the team.
Else you can open two instances of Visual Studio and switch at need: VS is smart enough to sense file system changes, but you have to be careful in saving before switching.
Does it have to be within the same IDE instance?
You could right click the VS icon in the task bar, select "Visual Studio 20__", and you will have two seperate instances of VS. You can then open separate solutions in both, without merging the two under one solution.
This will eat up far more resources, however. The previous responses are preferable.
What you are asking is impossible and extremely dysfunctional.
The supported solution would be to add all of the projects from Solution B to Solution A. Then you can open a single solution with all of your work. If you want compartmentalisation within your solution you can use solution folders.
If you can you should have a separate solution for the core components and package them as a nuget package. Both of your other solutions can then take a dependency on that single shared package.
open the solution 1 and right click and add the second solution. When you close the VS next time it will told you once to save the sln file. Do it for saving the settings in sln file.
Now everytime you will open sln1 will show you both project. It will not affect if you only move first project to pen drive or move to another computer. In case of 2nd project missing it will told you that 2nd project not found no more worries.
In case of Source Control - TFS I can't confirm how it work but their is some sollution for github (Which maybe hint anything for TFS).
The same trick can be applied but you don't need to push modified sln so this will not break anyone else's settings. If TFS store the files and code on the file system that you currently working then you can applied same trick to do applied this trick to that TFS project which is stored in your file system.
1.open solution1 in visual studio 2012 .
2.Right click on solution1 ,add existing project option.
3.select the solution2 .
4.Now solution1 and solution2 file are same project.

how to share a folder between two projects in Visual studio 2010

If I have a project called 'testing' in project A.
How can I share that folder 'testing' for project B in visual studio 2010?
The reason I would like to achieve about this is because when I change something in the folder testing of project A, I dont want to change the same things in project B.
Thanks in advance.
Maybe too late for the person who asked the question, but this is for people with similar problems. You can share folder contents with an extention 'Project Linker':
This builds upon the concept of linked files where you refer to the same file from two projects. This extention handles the management of that for an entire project. If you add a file to the project, it will be added too to the other project as a linked file. Same for deletes...
Attention: you need to have both projects in the same solution for this to work of coarse...
Extention VS2015
I used it in VS2010 and it's also availible for later versions.
You can't share folders in Visual Studio - they are logical constructs that are part of a solution or project.
The closest you can get is to add folders to the projects you need to share on and add all the files that you want to share as links. You will still need to manually synchronize all adds/deletes of files, but updates will come across all projects.
To make things easier, you may want to write a Visual Studio macro that synchronizes these folders for you (you can bind these to keyboard shortcuts and/or menu items).
If you put your solution (*.sln) files in the same directory they can share files in sub directories.

How to have the same VS project with multiple .csproj files depending on the VS version?

Sometimes I've seen a solution that includes up to three .csproj files for each project in the solution. Something like this:
Project.UI.2005.csproj
Project.UI.2008.csproj
Project.UI.2010.csproj
and the same with .sln files:
ProjectSolution.2005.sln
ProjectSolution.2008.sln
ProjectSolution.2010.sln
So if you copy the solution and want to open it using VS2005, you just need to open Project.UI.2005.csproj or ProjectSolution.2005.sln.
What is the best way of creating those 3 (or 2) files, in order to be able to open the same solution in multiple versions of Visual Studio?
Maybe the only way of doing this is modifying manually the .sln/.csproj. If so:
How can I modify those files correctly so I won't crash the solution?
I want to do this because sometimes I develop applications using VS2010 and when deploying the source code to my customers, they can't open it in VS2008, and then I have to do some tweaks.
Note:
I know there will be referencing and compiling problems if I use features only included in .NET Framework v4.0, or similar. Let's suppose all the projects in the solution are compiling under .NET Framework 2.0 (specified in the project properties).
I finally ended developing a small application do to this.
I'm still testing it, but it is working good so far.
All you need to do is, select the .sln file you want to convert, and specify the versions involved in the conversion, and it will do all the work for you.
If you have a VS 2010 project:
Solution (Solution.sln)
Project_1 (Project_1.csproj)
Project_2 (Project_2.csproj)
and you want downgrade the version (to 2008), it will keep those files, and also create:
Solution.2008.sln
Project_1.2008.csproj
Project_2.2008.csproj
And you will be able to open Solution.2008.sln with Visual Studio 2008 without problems.
As soon as I finish it, I'll share executables and sources here.

I don't get the concept of Visual Studio Projects and Solutions

In Eclipse, I have a workspace that contains all of my projects. Each project builds and compiles separately. A project does not interact with another project.
How does this relate to Visual Studio and Projects/Solutions there?
A VS project is it's own entity. It will build and compile by itself. A Solution is just a way to contain multiple projects. The projects don't necessarily need the other projects to compile (though, they can depend on the other projects).
This just lets you conceptually group projects together into one Big Project. For instance, you can have a separate testing project. It depends on the code from the actual project, and should be kept together with the actual project, but it does not need to be in the same exe/dll.
Each VS project builds a single EXE or DLL. The solution is just a collection of related projects.
So VS project:Eclipse project::VS solution:Eclipse workspace.
Another way to look at it is, a solution is a container for projects. For most of my work , I create each tier as a project within a solution so my tree looks like:
My Web App or Win App
Presentation Layer
files...
Business Layer
files...
Data Access
files
Your mileage may vary
#Thomas Owens:
Yes, some (most?) people using Eclipse have more than one workspace. It's what surprised me the most when I first started using Eclipse, so I'm replying here to make this comment more visible.
The thing that may be throwing you off is the following:
In VS2003, everything had a Project file and a Solution file. If you had a Solution with one Project, you could open the Solution and see the one Project. If you opened the Project, it would try and create a new Solution file to contain the Project. But web projects and Winform projects all had Projects and Solutions.
In VS2005 this changed a bit - by default now, Web projects no longer had Project files. They had received feedback from some web developers that didn't like Project files - their take was that if a file is in the directory, it's part of the app. After VS2005 shipped, they got more feedback from developers who did like the Project file notion, so they patched it back in. This is "Web Site" versus "Web Application" in VS2005 (and I can't remember which is which now).
In addition, in VS2005, if you have a Solution open with only one Project, you won't see in the Solution Explorer that there's even a Solution at all, you'll only see the Project (as if it was not in a Solution). Only after adding the second Project will you see that there's a Solution containing them both.
So basically you were on the right track - Solutions and Projects work the same in Visual Studio as they did in Eclipse, it's just some quirks that make things confusing.
A Solution has 0 or many Projects...
There are way too many kinds of web projects in Visual Studio 2008. There are Web Site Projects vs. Web Application Projects and they limit you in different ways. It's a good example of Microsoft providing too many choices instead of focusing on one strong solution. Even within the Web site Project option, there are at least 3 different ways to compile your application.
I found that not always seeing the solution in the Solution Explorer to be irritating. There is a setting in Options->Projects and Solutions->General called "Always Show Solution" which was handy.

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