Windows 10 removableStorage SQLite database -


i trying create external sqlite database, follow , tested text files in removable storage , works. try create database in removable storage:

public static async task<string> createdatabase(string name)     {         var folder = await findremovablestorage();         if (folder != null)         {             var file = await folder.createfileasync(name, creationcollisionoption.replaceexisting);             if(file!=null)             {                 var ret = $"{folder.name}{file.name}";                 return ret;             }         }         return null;      }  public async void thirdcase()     {         var path =await dataloggerservice.createdatabase("db.dat");          var connection = new sqlite.net.sqliteconnection(new sqliteplatformwinrt(), path); //cannot open      } 

i testing on desktop, , returns cannotopen. has created database out typical local folder?

more details of did here: datalogger

when finish want implement in raspberry pi, theorically same code windows iot or there change in sqliteplatformwinrt?

edition: more analisys:

i have tested database typical, working charm:

path.combine(windows.storage.applicationdata.current.localfolder.path, "db.dat"); 

i wanted create database in external storage, need add following steps:

1.- add capability use removablestorage. 2.- add file type association in order have rights manage kind of files

(the details here: http://expediteapps.com/blog/data-logger-with-windows-10-iot-in-progress/)

so change path removable storage path “e:\db.dat” , tells cannotopen.

the sqlite library pcl arrives here:

sqliteapiwinrt.cs

public result open(byte[] filename, out idbhandle db, int flags, intptr zvfs) {     sqlite3databasehandle internaldbhandle;     var ret = (result)sqlite3.open(filename, out internaldbhandle, flags, zvfs);     db = new dbhandle(internaldbhandle);     return ret; } 

where open is

[dllimport("sqlite3", entrypoint = "sqlite3_open_v2", callingconvention = callingconvention.cdecl)] 

public static extern result open(byte[] filename, out intptr db, int flags, intptr zvfs);

where using:

sqlite.uap.2015, version=3.8.10 

more aditions:

i have tested library https://www.nuget.org/packages/sqliteportable/ , finish in same error, internal.

and here road ends, help?

since asked raspberrypi 3 windows 10 iot sqlite implementation, here steps followed make work: (visual studio 2015 community)

  1. download: .vsix package universal windows platform sqlite page
  2. install package download folder
  3. in visual studio go tools->nuget package manager->package manager console , type in: install-package sqlite.net-pcl
  4. add required references (right mouse button -> add reference -> universal windows -> extensions)

here choose following:

  • microsoft visual c++ 2013 runtime package windows universal
  • sqlite universal windows platform
  • visual c++ 2015 runtime universal windows platform apps
  • windows iot extensions uwp (since using rpi 3 gpio pins)

basically followed chrisbriggsy steps , had add more resources cause sqlite didn't work


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