SQLite UWP Error with Mobile EMulator Windows 10

问题

I am getting the following error when I run the Mobile Emulator while trying to compile and run a VS 2015 UWP app. The app runs fine when using the Local Machine or Simulator.

   System.TypeInitializationException was unhandled by user code
  HResult=-2146233036
  Message=The type initializer for 'SQLitePCL.raw' threw an exception.
  Source=SQLitePCL.raw
  TypeName=SQLitePCL.raw
  StackTrace:
       at SQLitePCL.raw.sqlite3_open_v2(String filename, sqlite3& db, Int32 flags, String vfs)
       at SQLite.SQLiteConnection..ctor(String databasePath, SQLiteOpenFlags openFlags, Boolean storeDateTimeAsTicks)
       at SQLite.SQLiteConnection..ctor(String databasePath, Boolean storeDateTimeAsTicks)
       at App3.MainPage.LoadSQLData()
       at App3.MainPage..ctor()
       at App3.App3_XamlTypeInfo.XamlTypeInfoProvider.Activate_0_MainPage()
       at App3.App3_XamlTypeInfo.XamlUserType.ActivateInstance()
  InnerException: 
       HResult=-2146233052
       Message=Unable to load DLL 'sqlite3': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
       Source=SQLitePCL.raw
       TypeName=""
       StackTrace:
            at SQLitePCL.SQLite3Provider.NativeMethods.sqlite3_win32_set_directory(UInt32 directoryType, String directoryPath)
            at SQLitePCL.SQLite3Provider..ctor()
            at SQLitePCL.raw..cctor()

I have the following references: SQLite for Universal Windows 3.9.1 sqlite-net-pcl Microsoft Visual C++ 2013 Runtime Package for Universal Windows

The code where the error occurs in the "using (var db......:

 int recCtr = 0;
        var root = Windows.Storage.ApplicationData.Current.LocalFolder.Path;
        var dbPath = Path.Combine(Windows.Storage.ApplicationData.Current.LocalFolder.Path, "BaseBallOU.db");
        List<string> NHLCollection = new List<string>();
        using (var db = new SQLite.SQLiteConnection(dbPath))
        {
            var NHLlist = db.Table<Teams>().ToList();
            foreach (var item in NHLlist)
            {
                recCtr++;
                NHLCollection.Add(item.TeamName.ToString());
            }
        }

I see a number of similar posts, but some are dated and not using the most recent SQLite libs and pcls.

I'm looking for the correct SQLite dlls, sqlite pcls, runtimes (e.g. VC++ 2013? And version numbers that can be used to compile and run a UWP app on both the local machine and phone emulator.

TIA

回答1:

Following is how I work with SQLite:

Download and install Sqlite visual studio extension from http://sqlite.org/download.html
Create a new blank c# Universal Windows Platform app.
Right click on the References of project -> Add Reference -> Universal Windows -> Extension -> add SQLite for Universal App Platform and its dependency Visual C++ 2015 Runtime for Universal Windows
Right click on the project node -> Manage NuGet packages -> Search SQLite.Net-PCL -> Install the default version 3.0.5

Change your code to the following:

using (var db = new SQLite.Net.SQLiteConnection(new SQLite.Net.Platform.WinRT.SQLitePlatformWinRT(), dbPath))
{
    ...
}

回答2:

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

PM> 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"

If you didn't add reference for VC++ 2015 Runtime, you will get an error mentioned that "Unable to load DLL 'sqlite3' in SQLite Net Platform WinRT" when creating DB connection.

来源：https://stackoverflow.com/questions/33320191/sqlite-uwp-error-with-mobile-emulator-windows-10

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uwp