How to make new project and website into only one solution? - c#

How to make new project and website into only one solution?

Create the first project, then in the Solution Explorer you can right-click the solution and "Add new project" to it.

First create the WebSite, it will have a Solution (.sln file) but under the default settings it could be located far away from your WebSite folders.
Then add a Project to your solution like normal. If that project is a class library you will have to select it from "Add Reference, Projects tab" as well.
Conversely, you can start with a 'normal' Project and select "Add existing WebSite" from the "File" menu or the Solutions context menu.

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How to create new project for current class library without having to create a solution?

I have setup an class library project in visual studio so I can make a custom hyperlink [the built in one doesn't have what i need]. I want to now make a demo project to test it but I want to be able to do it without having to create a whole new project. How can I do that?
For what you want you just need to create a new project in the same solution.
If the solution is not seen in the Solution Explorer, you can enable the option to always show it here:
Open the Tools menu.
Press the Options item.
Expand the Projects and Solutions tree node and select the General tree node.
Tick the Always show solution check box.
Now you can just right-click your solution in the Solution Explorer and press Add and New project.
MSDN Reference to adding projects to a solution: https://msdn.microsoft.com/en-us/library/ff460187(v=vs.100).aspx
Whenever you create almost any type of new project in Visual Studio, a Solution is created for you;
A Solution is a structure for organizing projects in Visual Studio...
This means that multiple Projects (and Projects of different types) can exist within a single Solution. You can see the link above for steps on how to do this, or you can follow the steps listed below:
Open Solution Explorer from the View menu in Visual Studio [if it isn't already open];
Right-click the Solution in Solution Explorer. The Solution, as far as I am aware, is always the first item in the list;
Navigate to Add > New Project...:
;
Follow the steps to create your desired Project;
And that's it.
Don't forget to right-click the new Project in Solution Explorer and select Set as StartUp Project if you want to Run or Debug it:

how insert form from project other in visual c#

I have a Project in which there is a form that has several objects (controls) in itself. I want to add this form to another Project in another Solution. How to I can do this. Thanks.
This is a good thing to reuse your code :)
You have to make a library project.
1)File => New Project
2)Check Visual project in the tree
then select "Class Library", give it a name "MyFormLib"
3)Then simply copy paste YourForm.cs and YourForm.designer from your app project, to "MyFormLib".
4)Now go to solution explorer, browse to your application project, right click on "references" then "add reference"
5)To finish click on "solution" then choose your library project "MyFormLib"
.
6)You can now use the form from the library project inside your application project.
e.g : new MyFormLib.TheForm()
7) To reuse your form in your second application, redo steps 4 to 6
Just simply open the project where you want to add the existing form:
Right click on the Solution Explorer
Select "Add" -> "Existing Item..."
Browse your other project's folder, and search for the 3 files of your form:
yourForm1.cs, yourForm1.Designer.cs, yourForm1.resx
The simplest way is to
Open the destination solution in Visual Studio.
On the Solution Explorer, right-click the destination Solution name and Click on Add > Existing Projects. Identify the project with your source Form.
Move the form from source to destination project (The designer and resx files will move with it)
Change relevant namespace specifications and then you may remove the old form.

visual studio 2012: Help needed with projects and solution explorer

Hi iam new to visiual studio, and for my studies i have one centered with c#.It is not a difficult questions
firstly wheneveri start a new project through file->NEW->projects all other projects in the document disapears. anyway to keep them?
secondly whenever without any problem when i start new projects the solution explorer shows its contexts without problem, but how do i show the contents of other projects opened aswell?
thanks in advance hope it is not vague.
By doing this "file->NEW->projects" you are opening a new solution if you don't
change the solution property to "Create new solution" to "Add to solution".
By selecting "Add to solution" you can add new project to you existing solution.
also you can right click the existing solution and add new project to it.
Right click on your solution and then click on Add. Then select Existing project and add your project into the solution. Then you will be able to see all the projects opened at the same time.

C# access files from another project

I am having a solution consisting on silverlight and web project. i want to access a file which is located inside a folder in web project from my silverlight project.how can this be done.
this file is a users manual document for which i have to provide the download functionality to the user..
Right click on the Silverlight project and select Add --> Existing item.
In the dialog, navigate to the location of the web project. Select the file(s) you need but instead of clicking on "Add", click on the dropdown next to the Add button and select "Add As Link".
In your Silverlight project:
Right-click References > Add Reference.
On the left tab, select Solution.
Select which project(s) you want to include a reference to.
In Silverlight project C# files, you may have to add a 'using' statement if you are trying to use a Class from a referenced project.
Got the solutions as below,
var uri = new Uri(Application.Current.Host.Source, "../DirectoryName/FileName.docx");
HtmlPage.Window.Navigate(uri);

"A project with an Output type of Class Library cannot be started directly"

I downloaded a C# project and I wish to debug the project to see how an algorithm implementation works.
The project has come in a Folder, inside this folder there are -
.sln file and
a folder which has source files and a .csproj file.
I installed Visual Studio and opened the .sln file present in the main folder. I built the project successfully, but when I try to debug the project I get this message:
A project with an Output type of Class Library cannot be started directly In order to debug this project, add an executable project to this solution which references the library project. Set the executable project as the startup project.
The strange part is that I don't see a main function anywhere.
What should I do to get round this hiccup?
The project you have downloaded compiles into a dll assembly and provide a set of classes with implemented functionality.
You should add to your solution a new project with Output Type of either Console Application or Windows Application (VS Add Project wizard will offer you different templates of Projects).
In the newly added project, you can implement logic to test your Class Library.
Output type of the project you can find and change by the following steps:
Right click on project in Solution Explorer -> Properties.
In opened tab with properties select Application and there will be ComboBox marked with Output Type label.
Just right click on the Project Solution
A window pops up.
Expand the common Properties.
Select Start Up Project
In there on right hand side Select radio button with Single Startup Project
Select your Project in there and apply.
That's it. Now save and build your project. Run the project to see the output.
This was the solution that worked for me since I couldn't find 'Common Properties' option.
Select your topmost level project in Solution Explorer.
Go to Project, and in contextual menu Set as StartUp Project.
See also: A project with an Output type of Class Library cannot be started directly
Just needs to go:
Solution Explorer-->Go to Properties --->change(Single Startup project) from.dll to .web
Then try to debug it.
Surely your problem will be solved.
The strange part is that I don't see a main function anywhere.
That is exactly your problem. The project merely creates a DLL. It has no executable to run.
You will need to add a second project, which is an executable which references the other project, and calls something in it.
1) Right Click on **Solution Explorer**
2) Go to the **Properties**
3) Expand **Common Properties**
4) Select **Start Up Project**
5) click the radio button (**Single Start_up Project**)
6) select your Project name
7) Then Debug Your project
Right Click on "Solution Explorer" -> "Properties"
Expand "Common Properties"
Select "Start Up Project"
click the radio button "Single Start_up Project"
select your Project name from the drop down list.
If still not working after the above steps, then try this.
Expand solutions explorer.
Right click on project name -> "Properties"
Go to "Application" tab
Select "Output type"
From the drop down list select the appropriate type according to your application.
"Windows application" or
"Console application"
Then save (ctrl + S)
Try debugging (F5)
You'll need some kind of app (Console Apps are my favorite for debugging, but a WinForm will do) which uses your Class Library. Just add a new project (in the same solution) of a Console Application or Windows Forms Application, and add a reference to your current project. Once you've done that, make any calls you need, set your break points, and go to town.
I had a similar issue when trying to use the Experimental Instance of Visual Studio 2013. This was for a vsix project (Creating Snippets).
Solution was:
Right Click Project in Solution Explorer > Properties > Debug
Setting the Start Action to "Start external program" and using the following path:
C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\devenv.exe
This option was set to "Start project" which won't work for the application output type Class Library, which caused that same error.
Note: Yours may differ depending on how you installed VS.
Error solutions is that you have already open your project but by mistake you have selected another class library .. that's reason this error is showing ... so what u need to do you u just select u r project then right click on u r project
after right click u can see the list box and select the "Set as start up project " option .
Accepted answer works if your solution has a project that compiles to an exe. If your solution does not have any projects that compile to an exe, then you have to use 'Start external program'.
VS2019 instructions:
right click -> properties on the main solution
debug, start external program, and add command line arguments
VS2022 instructions:
right click -> properties on the main solution
scroll down to Debug
Debug > General > Open debug launch profiles UI
left click the 'new' icon in the top left, select 'executable'
fill it out as per VS2019 (pick the exe and add command line arguments)
when clicking the start button, first select the profile you made
Suppose you have multiple project in the solution. Select the project that you want to view in browser and select 'Set as StartUp Project'. In your multiple project soln which was the main, the visual studio was unable to identify. this was the main problem.
You can right click the Class Library project and from the drop-down choose Initialize Interactive C# which will load your project context and you can work it in the interactive session.
In my case, the cause was that one of my projects in the solution wasn't loaded. The reason it couldn't load properly was that the file path length of one of the files was too long. Upon deleting this long file, I could reload the project, and build the solution.
If the question involves an Azure project, make sure you have the "Azure development" tool set installed, or when you go to run a solution you may get this same error.
Tools > Get Tools and Features... > Tick the box next to Azure development > Click install
None of the answers provided above helped me resolve this error, this is what resolved the issue for me.
Right click on the solution and select "Properties", which is in my case "Sintctech.Data".
Select the section called "Application".
Check what you have selected as your output type. If it is "Windows Application", change it to "Console Appication".
Rebuild and the problem should be fixed.

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