我正在尝试创建一个基本应用程序,该应用程序无需app.config文件即可连接到SQLite数据库。 我发现的只是点点滴滴的代码,没有完整的示例。
我有一个包含InventoryItems(ID,位置,数量)的数据库
我收到以下错误: System.ArgumentException:'无法找到请求的.Net Framework数据提供程序。可能未安装。'“
我创建了数据库上下文,我的代码如下:
enter code here
public class SQLiteDbContext : DbContext
{
public DbSet<InventoryItem> InventoryItems { get; set; }
public SQLiteDbContext() : base(GetSQLiteConnection(), false)
{ }
protected static DbConnection GetSQLiteConnection()
{
DbProviderFactory factory = DbProviderFactories.GetFactory("System.Data.SQLite.EF6");
DbConnection connection = factory.CreateConnection();
connection.ConnectionString = "C:\SQLite\Inventory.db";
return connection;
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
modelBuilder.Configurations.Add(new InventoryItemMap());
base.OnModelCreating(modelBuilder);
}
}
public class InventoryItemMap : EntityTypeConfiguration<InventoryItem>
{
public InventoryItemMap()
{
ToTable("InventoryItem");
Property(p => p.Id).IsRequired();
Property(p => p.Name).IsRequired();
Property(p => p.Quantity).IsRequired();
Property(p => p.Storage).IsOptional();
Property(p => p.Location).IsOptional();
}
}
public class InventoryItem
{
public int Id { get; set; }
public string Name { get; set; }
public double Quantity { get; set; }
public string Storage { get; set; }
public string Location { get; set; }
public string Container { get; set; }
}