SQLite CreateDatabase not supported error

问题:

I'm using Entity Framework 4.2 CF with SQLite, but when i try to launch the application i got "CreateDatabase is not supported by the provider" error. This is my model mapping:

protected override void OnModelCreating(DbModelBuilder modelBuilder)         {             #region NewsMapping              modelBuilder.Entity<News>().ToTable("news");             modelBuilder.Entity<News>().HasKey(x => x.Id).Property(x => x.Id).HasColumnName("ID").HasColumnOrder(0);             modelBuilder.Entity<News>().Property(x => x.Status).HasColumnName("STATUS");             modelBuilder.Entity<News>().Property(x => x.NewsTitle).HasColumnName("NEWS_TITLE");             modelBuilder.Entity<News>().Property(x => x.Content).HasColumnName("CONTENT_1");             modelBuilder.Entity<News>().Property(x => x.IsImportant).HasColumnName("IS_IMPORTANT");             modelBuilder.Entity<News>().Property(x => x.OrderNumber).HasColumnName("ORDER_NUMBER");             modelBuilder.Entity<News>().Property(x => x.CreateDate).HasColumnName("CREATE_DATE");             #endregion              base.OnModelCreating(modelBuilder);          } 

What is wrong in this code?

Thanks

回答1:

Nothing is wrong in the code. The error says exactly what is going on. Your EF provider for SQLite (System.Data.SQLite) doesn't provide database creation so you must create database and all tables manually before you launch the application.

回答2:

Ok i found the solution, the provider doesn't support "Database Creation", so i had to initialize it empty:

public EkosContext()         {             Database.SetInitializer<EkosContext>(null);         }  

回答3:

I got this error for EF 6.1.3 and System.Data.Sqlite 1.0.103 because I did not specify the location of the database file properly in my web.config file.

To fix the problem I moved the database file to App_data and changed my connection string to connectionString="data source=|DataDirectory|databaseName;Version=3;"

回答4:

As been because of the wrong path of my sqlitedb for me in the web.config, as simple and stupid that annoying.

文章来源: SQLite CreateDatabase not supported error