<分区>
Possible Duplicate:
How to use reflection to call generic Method?
我正在尝试简化一些 EF Code First 配置。
而不是像这样编写代码:
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Entity<Asset>().ToTable("Assets");
modelBuilder.Entity<VideoAsset>().ToTable("VideoAssets");
modelBuilder.Entity<ImageAsset>().ToTable("ImageAssets");
...
}
我将每个类型声明的表包装到一个类中并使用反射来调用 modelBuilder
public class TablePerTypeBuilder<TBase> where TBase : class
{
public void Build(DbModelBuilder modelBuilder)
{
//modelBuilder.Entity<Asset>().ToTable("Assets");
modelBuilder.Entity<TBase>().ToTable(typeof(TBase).Name);
//modelBuilder.Entity<VideoAsset>().ToTable("VideoAssets");
//modelBuilder.Entity<ImageAsset>().ToTable("ImageAssets");
var types = from a in AppDomain.CurrentDomain.GetAssemblies()
from t in a.GetTypes()
where typeof(TBase).IsAssignableFrom(t)
select t;
foreach (Type type in types)
{
modelBuilder.Entity<type>().ToTable(type.Name);
//Error - The type or namespace name 'type' could not be found (are you missing a using directive or an assembly reference?)
}
}
}
由于编译时安全性,不可能将类型添加为泛型参数。那么是否可以使用反射进行相同的调用?
目的是像这样调用builder
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
TablePerTypeBuilder<Asset> builder = new TablePerTypeBuilder<Asset>();
builder.Build(modelBuilder);
}