C# EntityTypeConfiguration和<;的扩展方法;数据类型>;属性配置
使用Entity Framework,我可能会有如下配置:C# EntityTypeConfiguration和<;的扩展方法;数据类型>;属性配置,c#,entity-framework,C#,Entity Framework,使用Entity Framework,我可能会有如下配置: internal class MyDbContext : DbContext { .... protected override void OnModelCreating(DbModelBuilder mb) { builder.Entity<MyEntity>() .ToTable("MyTable", "MySchema"); builder.Entity<MyEnti
internal class MyDbContext : DbContext
{
....
protected override void OnModelCreating(DbModelBuilder mb)
{
builder.Entity<MyEntity>()
.ToTable("MyTable", "MySchema");
builder.Entity<MyEntity>()
.Property(e => e.Name)
.IsRequired()
.HaxMaxLength(10);
builder.Entity<MyEntity>()
.Property(e => e.City)
.HaxMaxLength(10);
}
}
内部类MyDbContext:DbContext
{
....
模型创建时受保护的覆盖无效(DbModelBuilder mb)
{
builder.Entity()
.ToTable(“MyTable”、“MySchema”);
builder.Entity()
.Property(e=>e.Name)
.IsRequired()
.HaxMaxLength(10);
builder.Entity()
.Property(e=>e.City)
.HaxMaxLength(10);
}
}
我想写一个扩展方法,这样我就可以像这样写:
builder.Entity<MyEntity>()
.ToTable("MyTable", "MySchema")
.Property(e => e.Name,
n => n.IsRequired()
.HaxMaxLength(10))
.Property(e => e.City,
c => c.HasxMaxLength(50));
builder.Entity()
.ToTable(“MyTable”、“MySchema”)
.Property(e=>e.Name,
n=>n.IsRequired()
.HaxMaxLength(10))
.地产(e=>e.城市,
c=>c.HasxMaxLength(50));
我很确定我的签名是正确的,但我不知道如何让内部管道正常工作
public static EntityTypeConfiguration<TEntityType> Property<TEntityType>(
this EntityTypeConfiguration<TEntityType> instance,
Expression<Func<TEntityType, byte[]>> propertyExpression,
Func<BinaryPropertyConfiguration, BinaryPropertyConfiguration> propertyConfiguration)
where TEntityType : class
{
Func<TEntityType, byte[]> func = propertyExpression.Compile();
// ??
return instance;
}
公共静态EntityTypeConfiguration属性(
此EntityTypeConfiguration实例,
表达式属性表达式,
Func属性(配置)
其中TEntityType:类
{
Func Func=propertyExpression.Compile();
// ??
返回实例;
}
玩了一会儿之后,我意识到我不需要执行/编译其中任何一个,我只需要按照正确的顺序将参数链接在一起
public static EntityTypeConfiguration<TEntityType> Property<TEntityType>(
this EntityTypeConfiguration<TEntityType> instance,
Expression<Func<TEntityType, byte[]>> propertyExpression,
Func<BinaryPropertyConfiguration, BinaryPropertyConfiguration> propertyConfiguration)
where TEntityType : class
{
propertyConfiguration(instance.Property(propertyExpression));
return instance;
}
公共静态EntityTypeConfiguration属性(
此EntityTypeConfiguration实例,
表达式属性表达式,
Func属性(配置)
其中TEntityType:类
{
propertyConfiguration(instance.Property(propertyExpression));
返回实例;
}