Develop Reference

C# Windows forms Application Reference error in release

I have my windows forms application with WindowsAPICodePack but i don't know where should I put the package in the release folder, and without it the program just gives me an error (it's in Hungarian so I don't think anybody can understand, but it said that it can't find the windowsAPICodePack, the version number, culture and publickeytoken) on another PC, on mine it works.

Depending on if your application is using a packages.config file to manage packages or if your project is using package references (PackageReference) will determine path to solution.
When a package is installed it records the package identifier and version into the project file or packages.config file in your solution workspace.
If using a package.config to mange packages then ensure your packages are getting installed in the location as expected, possibly clearing the cache will help to ensure proper version is installed.
find out the packages folder where your application is trying to load the references.
Possibly config binding redirects.
Clear you package cache and reinstall. use the package manager ui for your ‘debug’ and ‘release’ MSBuild configs to ensure the package is being referenced correctly.
Verify your nuget.xml settings file for locations of packages
Read all the version or property values to use for your application. Ensure you are configuring the release target as expected.
Here are some links to help you config the correct setup for your approach:
Package reference via project files
if using - Packages.config settings
Config setting for Nuget
NuGet settings
Note: for simplicity if this is just a school project then just remove all NuGet packages references and find the dll . Then just add reference to dll and check the property to include in output . This will give you a simple folder with all the files needed to run your app from pen-drive

Does nuget create separate packages?

I am still confused about how nuget works. I git clone a C# .sln project and from console, and I ran this nuget command:
nuget restore my_project.sln
it came to my attention that it generates two packages containing all dependencies required by my_project.
One package is located under my_project/src/packages, the other c:/users/my_user_name/.nuget/packages. While the file structures are a little different the DLL files in both packages are identical.
That confused me. Why two packages are generated by default? Where exactly does Visual studio look up for the project's dependencies?
More important, which config file should I update in order to only keep a copy of the dependencies and how can I specify the location in my file system for the packages?

Recent versions of NuGet support package references in project files.
This format will restore packages on demand, using your %USERPROFILE%.nuget folder as a cache. And your solution folder won't be "polluted" by a packages folder with binaries that you probably don't want to commit to source control.
VS2017 allows you to select "PackageReferences" or the older "Packages.Config" format when you create new projects (Tools/Options/NuGetPackageManager/General).
You probably have some projects in your solution that use the older "Packages.config" format, which stores in the packages folder in the solution directory, and newer "PackageReferences" format.
To convert the older projects to the new format, I believe you need to remove all packages from the project, then add them back again. They will be added using the default format you selected, with a prompt for confirmation if you selected "Allow format selection on first package install".

Visual studio won't read .pdb from my nupkg

I have generated some nuget packages containing .pdbs with the following:
<AllowedOutputExtensionsInPackageBuildOutputFolder>$(AllowedOutputExtensionsInPackageBuildOutputFolder);.pdb</AllowedOutputExtensionsInPackageBuildOutputFolder>
I have verified the .pdbs are within the .nupkg generated in the lib/*/ folder next to the dll's.
However, when I consume these nuget packages in Visual Studio 2017, it only extracts the .dll's and not the .pdb's. Leaving me unable to debug into the package.
What am I doing incorrectly?

Since you can make sure the .nupkg contains the .pdb file. please make sure both the projects are in debug mode.
Consuming a nuget package locally sometimes has some difference from installing it from nuget.org. The .pdb source won't be found in solution. By default, the .pdb will locate under path like :C:\Users\xxx\.nuget\packages\PackageName\xxx.
Update:
If the nuget package project and the project which consumes it is on the same machine. The AllowedOutputExtensionsInPackageBuildOutputFolder property is enough. Since you have source files on same machine, and the debug engine can easily find it so that you can step into it.
But if for a scenario like this: You developed the nuget package. And share it to other team members. To make them can Step into you should embed the xx.cs files into the .nupkg.
Under this circumstances, the AllowedOutputExtensionsInPackageBuildOutputFolder may not work. I can't find a way to embed source files using it. You may need to use a nuget pack command like this issue. Actually, the way Stephan packed the project is correct. I've checked it work and will embed the source files and .dll and .pdb into the .nupkg. Of course, in this way you need to add the path to source files repo by Solution=>Properties=>Debug Source files:
In addition: You can add the nuget pack command in a post-build event, so that every time you build a project successfully, it will package for you.
Also, you can consider source links as source control so that you won't configure the source path by Solution=>properties.

NuGet Package Restore Issue

I need NuGet to automatically restore packages. At the moment, the referenced dlls are missing.
I have enabled package restore on my solution.
The .nuget folder is checked in.
The packages.config file is checked in for each project.
The packages folder (on solution level) is check in.
The packages folder contains folders for all the packages the solution uses with nuspec and nupkg files for each package. The dll is not checked in.
In VisualStudio the packages are installed but the reference to the dll in each project is missing (ass the dll is not checked in).
I have tried to install NuGetPowerTools. Same story.
Thanks,

There is no reason to check-in anything underneath the packages folder. Optionally, you can check in the repositories.config file but technically this is not required.
Do I get it right that you have checked-in the nuspec and nupkg files within the Packages folder? if so, delete them. These will be restored, and their presence might be causing restore failures (I don't think NuGet package restore is checking for the presence of the package contents, and rather checks for the presence of the nupkg/nuspec file in the Packages folder, skipping the package from being restored if found)
In summary, check in only:
The empty solution level packages folder (optionally the repositories.config)
.nuget folder and its contents
packages.config for every project

I have got this problem in Visual Studio 2015 Update 3.
Found a solution that worked for me:
Went in to the user profile NuGet cache
(C:\Users\<username>\.nuget\packages\), and deleted everything in
there.
I think during the restore process my cache was cleared of all DLL
files, and when I tried to install a package it was using the cache
instead of the files off of NuGet. Now that I've cleared the cache, I
can now install the NuGet packages.

This is almost the same symptoms as I had once, and then the cause was the permission level on packages.config. Deleting the file solved it for me.
I have no idea if it will help you, but have a look at the permission sets for all the files.

Same here, deleted config and re-referenced all the packages. Think it has something to do with SVN.

Nuget DLL location issues with SVN

We have a .csproj that is being worked on by a number of people.
Unfortunately nuget has installed its 'packages' in different locations on each users machine, meaning when another user does an SVN 'update', their project wont compile because the .csproj file's 'hintpath' element is pointing to the dll in a different location.
Are there any other solutions to this?

Use NuGet packages restore feature and don't commit packages to source control.
This allows NuGet client application to download packages on demand. Downloaded packages will be located in solution folder, so, references to packages content will work at any machines.