AppDbContext 配置

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string? connectionString = builder.Configuration.GetConnectionString("DefaultConnection");  //Configuration.GetConnectionString("DefaultConnection"); SqlHelper.ConnectionString = connectionString; SqlHelper.ConnectionStringForERP = builder.Configuration.GetConnectionString("ERPConnection"); builder.Services.AddDbContext<AppDbContext>(options => {   options.UseSqlServer(connectionString);   //调试   options.EnableSensitiveDataLogging(true);//启用敏感数据记录   //记录日志，包含生成的sql            options.LogTo(msg =>   {     //调试-窗口消息     System.Diagnostics.Debug.WriteLine(msg);     //输出-窗口消息     Console.WriteLine(msg);   });     //记录日志，只查看info类型的日志   //optionsBuilder.LogTo(   //   msg=> System.Diagnostics.Debug.WriteLine(msg),   //    LogLevel.Information,   //    DbContextLoggerOptions.DefaultWithLocalTime); });