如何注入到ILogger EFCore的DbContext

Question

我了.NET的核心應用與EFCore分貝背景：

public class MyappDbContext : DbContext 
{ 
    private ILogger<MyappDbContext> _logger; 

    public MyappDbContext(DbContextOptions<MyappDbContext> options) 
     : base(options) 
    { 
     // ??? 
    } 
} 

在啓動I類註冊方面：

services.AddDbContext<MyappDbContext>(options => options.UseSqlServer(connectionString)); 

如何注入MyappDbContext ILogger或ILoggerFactory （創建記錄器）？

Answer 1

所有你需要做的就是添加一個ILoggerFactory或​​參數上下文構造：

public class MyappDbContext : DbContext 
{ 
    private readonly ILogger<MyappDbContext> _logger; 

    public MyappDbContext(DbContextOptions<MyappDbContext> options, 
     ILogger<MyappDbContext> logger) 
     : base(options) 
    { 
     _logger = logger; 
    } 
}