[英]Passing model class as a generic type parameter
I have a skeleton code like this.我有这样的骨架代码。 I want to create a method that can take a generic model as its argument.
我想创建一个可以将通用 model 作为其参数的方法。 Inside GenericMethod, if I wanted to access the property of models, how do I actually configure the method?
在 GenericMethod 内部,如果我想访问模型的属性,我该如何实际配置该方法?
public class ModelA
{
public string Name { get; set;}
public int Property1 { get; set; }
}
public class ModelB
{
public string Name { get; set;}
public int Property2 { get; set; }
}
public class MainClass
{
public async Task<int> ProcessA()
{
await GenericMethod(ModelA modelA);
}
public async Task<int> ProcessB()
{
await GenericMethod(ModelB modelB);
}
public async Task<int> GenericMethod<T>(T model) where T : something?
{
// Get model name here like this
model.Name
}
}
Any help would be highly appreciated.任何帮助将不胜感激。 Thank you.
谢谢你。
I would use a common interface for this, for example IHaveName
:我会为此使用一个通用接口,例如
IHaveName
:
public interface IHaveName
{
string Name { get;set; }
}
public class ModelA: IHaveName
{
public string Name { get; set; }
}
public class ModelB: IHaveName
{
public string Name { get; set; }
}
Now you can make a constraint on it:现在您可以对其进行约束:
public async Task<int> GenericMethod<T>(T model) where T : IHaveName
{
// Get model name here like this
model.Name
}
Interfaces are better than classes here since you can implement multiple and they have other advantages(for example unit tests, IoC etc.).接口在这里比类更好,因为您可以实现多个并且它们具有其他优点(例如单元测试、IoC 等)。
inherit ModelA and ModelB from a common parent having the field Name, and make like从具有字段名称的共同父级继承 ModelA 和 ModelB,并制作类似
public async Task<int> GenericMethod<T>(T model) where T : IModelParent
You can make a parent class for your models and pass its type as an argument.您可以为您的模型创建一个父 class 并将其类型作为参数传递。
abstract class ModelParent
{
public virtual string Name { get; set; }
}
public class ModelA : ModelParent
{
public override string Name { get => base.Name; set => base.Name = value; }
}
public class ModelB : ModelParent
{
public override string Name { get => base.Name; set => base.Name = value; }
}
public class MainClass
{
public async Task<int> ProcessA()
{
await GenericMethod(ModelA modelA);
}
public async Task<int> ProcessB()
{
await GenericMethod(ModelB modelB);
}
public async Task<int> GenericMethod<T>(T model) where T : ModelParent
{
// Get model name here like this
model.Name
}
}
Assuming that you do not need/want any instances of Parent
class, you might want to make it an abstract.假设您不需要/不想要
Parent
class 的任何实例,您可能希望将其设为摘要。
Some links一些链接
to read:读书:
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