Tho*_*ter 2 c# entity-framework entity-framework-core asp.net-core
我正在使用 .netCore 和实体框架从 SQL 数据库获取一些数据。
我已经设置了一个DbContext
public partial class DashboardContext : DbContext
{
public NotfallDashboardContext(DbContextOptions<NotfallDashboardContext> options) : base(options) {}
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.Entity<DashboardData>(entity =>
{
...
}
}
public virtual DbSet<DashboardData> DashboardData { get; set; }
}
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并使用以下设置将其注入我的控制器
services.AddDbContext<DashboardContext>(options => options.UseSqlServer(Configuration.GetConnectionString("DashboardDatabase")));
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现在,该类DashboardData使用TableAttirbute 连接到正确的表和架构。
[Table("TableName", Schema = "dbo")]
public partial class DashboardData
{
...
}
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我想做的是将这两个字符串“TableName”和“dbo”提取到我的 appsettings.json 配置中。我已经将配置添加到 appsettings,创建了 TableConfiguration 类并设置依赖项注入:
表配置.cs
public class TableConfiguration
{
public string DatabaseView { get; set; }
public string DatabaseSchema { get; set; }
}
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应用程序设置.json
"TableConfiguration": {
"DatabaseTable": "TableName",
"DatabaseSchema": "dbo"
}
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启动.cs
services.Configure<TableConfiguration>(Configuration.GetSection("TableConfiguration"));
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是否可以注入或以其他方式使用 DasboardData 属性中的配置?
在你的Startup.cs:
services.Configure<TableConfiguration>(Configuration.GetSection("TableConfiguration"));
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然后,注入IOptions<TableConfiguration> tableConf到您的上下文中并将其存储以供您以后使用OnModelCreating():
public class DashboardContext : DbContext
{
private readonly TableConfiguration tableConf;
public DashboardContext(DbContextOptions<DashboardContext> options, IOptions<TableConfiguration> tableConf) : base(options)
{
this.tableConf = tableConf.Value;
}
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.Entity<DashboardData>(entity =>
{
entity.ToTable(this.tableConf.DatabaseTable, this.tableConf.DatabaseSchema);
});
}
public virtual DbSet<DashboardData> DashboardData { get; set; }
}
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