明明給數據庫文件給了讀取寫入的權限，但是系統(tǒng)還會依然報錯，

Microsoft.Data.Sqlite.SqliteException: 'SQLite Error 14: 'unable to open database file

一會說找不到數據庫了，一會說打不開數據庫了，為了排除問題，直接先給數據庫everyone用戶所有權限試試，依然報錯，如下：
An exception occurred in the database while saving changes for context type 'XXX.Data.DBContext'.
Microsoft.Data.Sqlite.SqliteException (0x80004005): SQLite Error 8: 'attempt to write a readonly database'.
   at Microsoft.Data.Sqlite.SqliteException.ThrowExceptionForRC(Int32 rc, sqlite3 db)
   at Microsoft.Data.Sqlite.SqliteDataReader.NextResult()
   at Microsoft.Data.Sqlite.SqliteCommand.ExecuteReader(CommandBehavior behavior)
   at Microsoft.Data.Sqlite.SqliteCommand.ExecuteReader()
   at Microsoft.Data.Sqlite.SqliteCommand.ExecuteNonQuery()
   at Microsoft.Data.Sqlite.SqliteConnectionExtensions.ExecuteNonQuery(SqliteConnection connection, String commandText, SqliteParameter[] parameters)
   at Microsoft.Data.Sqlite.SqliteTransaction..ctor(SqliteConnection connection, IsolationLevel isolationLevel, Boolean deferred)
   at Microsoft.Data.Sqlite.SqliteConnection.BeginTransaction(IsolationLevel isolationLevel, Boolean deferred)
   at Microsoft.Data.Sqlite.SqliteConnection.BeginTransaction(IsolationLevel isolationLevel)
   at Microsoft.Data.Sqlite.SqliteConnection.BeginDbTransaction(IsolationLevel isolationLevel)
   at System.Data.Common.DbConnection.BeginTransaction(IsolationLevel isolationLevel)
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.ConnectionBeginTransaction(IsolationLevel isolationLevel)
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.BeginTransaction(IsolationLevel isolationLevel)
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.BeginTransaction()
   at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.Execute(IEnumerable`1 commandBatches, IRelationalConnection connection)
   at Microsoft.EntityFrameworkCore.Storage.RelationalDatabase.SaveChanges(IList`1 entries)
   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(IList`1 entriesToSave)
   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(StateManager stateManager, Boolean acceptAllChangesOnSuccess)
   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.<>c.<SaveChanges>b__104_0(DbContext _, ValueTuple`2 t)
   at Microsoft.EntityFrameworkCore.Storage.NonRetryingExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(Boolean acceptAllChangesOnSuccess)
   at Microsoft.EntityFrameworkCore.DbContext.SaveChanges(Boolean acceptAllChangesOnSuccess)

Exception: 
Microsoft.Data.Sqlite.SqliteException (0x80004005): SQLite Error 8: 'attempt to write a readonly database'.
   at Microsoft.Data.Sqlite.SqliteException.ThrowExceptionForRC(Int32 rc, sqlite3 db)
   at Microsoft.Data.Sqlite.SqliteDataReader.NextResult()
   at Microsoft.Data.Sqlite.SqliteCommand.ExecuteReader(CommandBehavior behavior)
   at Microsoft.Data.Sqlite.SqliteCommand.ExecuteReader()
   at Microsoft.Data.Sqlite.SqliteCommand.ExecuteNonQuery()
   at Microsoft.Data.Sqlite.SqliteConnectionExtensions.ExecuteNonQuery(SqliteConnection connection, String commandText, SqliteParameter[] parameters)
   at Microsoft.Data.Sqlite.SqliteTransaction..ctor(SqliteConnection connection, IsolationLevel isolationLevel, Boolean deferred)
   at Microsoft.Data.Sqlite.SqliteConnection.BeginTransaction(IsolationLevel isolationLevel, Boolean deferred)
   at Microsoft.Data.Sqlite.SqliteConnection.BeginTransaction(IsolationLevel isolationLevel)
   at Microsoft.Data.Sqlite.SqliteConnection.BeginDbTransaction(IsolationLevel isolationLevel)
   at System.Data.Common.DbConnection.BeginTransaction(IsolationLevel isolationLevel)
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.ConnectionBeginTransaction(IsolationLevel isolationLevel)
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.BeginTransaction(IsolationLevel isolationLevel)
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.BeginTransaction()
   at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.Execute(IEnumerable`1 commandBatches, IRelationalConnection connection)
   at Microsoft.EntityFrameworkCore.Storage.RelationalDatabase.SaveChanges(IList`1 entries)
   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(IList`1 entriesToSave)
   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(StateManager stateManager, Boolean acceptAllChangesOnSuccess)
   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.<>c.<SaveChanges>b__104_0(DbContext _, ValueTuple`2 t)
   at Microsoft.EntityFrameworkCore.Storage.NonRetryingExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(Boolean acceptAllChangesOnSuccess)
   at Microsoft.EntityFrameworkCore.DbContext.SaveChanges(Boolean acceptAllChangesOnSuccess)

    還說你的數據庫是只讀的，我已經給數據庫文件EVERYONE用戶所有的權限了，還報這個錯誤，不得不吐槽一下微軟的權限設計問題了。。。。 其實，這種錯誤一般是數據庫所在的目錄沒有寫入權限引起的，你光給數據庫權限是不夠的。但是如果給整個目錄給寫入的權限，那又太危險了，所以為了解決這個問題，一般可以新建一個子目錄，把數據 庫放進去，再給子目錄和數據庫授權即可