sqllite3.dll issues with UWP app development for Mobile - sqlite

Question

I am trying to learn how to develop apps for UWP for both Desktop and Mobile. I have been currently working on getting the Entity Framework working in my app to store application state and followed the following link:
https://learn.microsoft.com/en-us/ef/core/get-started/uwp/getting-started
It worked well for Desktop, the issue however is that when I try to run it on the Windows Mobile emulator I get the following error in debug mode when the code reaches the db.Database.Migrate() step:
Unable to load DLL 'sqlite3': The specified module could not be found
In the link I pasted above, someone else had the same issue and in the comments they recommended to try the following:
Step 1: Install SQLite VSIX pacakge for Universal Windows Platform development using Visual Studio 2015
https://www.sqlite.org/2016/sqlite-uwp-3130000.vsix
Step 2: Install NuGet package SQLite.NET-PCL
Install-Package SQLite.NET-PCL
Step 3: Add references
Add Reference -> Universal Windows ->Extensions -> Make sure the following packages have been checked: "SQLite for Universal Windows Platform" "Visual C++ 2015 Runtime for Universal Windows Platform Apps"
After that, if you get the error "Payload contains two or more files with the same destination path 'sqlite3.dll', do the following:
copy sqlite3.dll from
C:\Program Files (x86)\Microsoft SDKs\UAP\v0.8.0.0\ExtensionSDKs\SQLite.UAP.2015\3.8.11.1\Redist\Debug\ARM\sqlite3.dll
past to (override it)
C:\Users\%USERNAME%\.nuget\packages\SQLitePCL.raw_basic\0.7.1\build\native\sqlite3_dynamic\winrt81\arm\sqlite3.dll
The problem after doing those steps is that I am now seeing the issue when doing a build for "Payload contains two or more files" however not in the SQLitePCL.raw_basic directory (I don't even seem that have that). Instead my error is the following:
Payload contains two or more files with the same destination path 'sqlite3.dll'. Source files:
C:\Users\admin\.nuget\packages\SQLite\3.13.0\runtimes\win7-x86\native\sqlite3.dll
C:\Program Files (x86)\Microsoft SDKs\UAP\v0.8.0.0\ExtensionSDKs\SQLite.UWP.2015\3.13.0\Redist\Debug\x86\sqlite3.dll
I have been searching everywhere and am truly stumped as to how to get my UWP program working on Mobile. Thanks a lot for your help!

Answer 1

It seems like you got the solution for resolving the exception The specified module could not be found from #Leandro_Medeiros_Machado 's comment on this document. If you got the Payload contains two or more files with the same destination path 'sqlite3.dll' exception after you done the above three steps you may be also found the next solution from the comment.
After that, if you get the error "Payload contains two or more files with the same destination path 'sqlite3.dll', do the following:copy sqlite3.dll from
C:\Program Files (x86)\Microsoft SDKs\UAP\v0.8.0.0\ExtensionSDKs\SQLite.UAP.2015\3.8.11.1\Redist\Debug\ARM\sqlite3.dll
past to (override it)
C:\Users\%USERNAME%\.nuget\packages\SQLitePCL.raw_basic\0.7.1\build\native\sqlite3_dynamic\winrt81\arm\sqlite3.dll
For you, you may need to copy from
C:\Program Files (x86)\Microsoft SDKs\UAP\v0.8.0.0\ExtensionSDKs\SQLite.UWP.2015\3.13.0\Redist\Debug\x86\sqlite3.dll to(override) C:\Users\admin\.nuget\packages\SQLite\3.13.0\runtimes\win7-x86\native\sqlite3.dll.
But actually, for using EF core you don't need the above steps and I recommend you check your environment instead of using the above workaround. I created a simple EF project by following the document and without install the VSIX I can run successfully on the emulator (build 10586). My VS build is 2015 update 3, my OS version is build 14393 and the EF core version is Microsoft.EntityFrameworkCore.Sqlite 1.1.0. So please firstly check if your environment met the following requirements:
Windows 10
Visual Studio 2015 Update 3
The latest version of Windows 10 Developer Tools
And if your EF core and EF core tools versions are right.