C#泛型-推断静态工厂成员的类型 [英] C# Generics - Infer Type of static factory members

问题描述

我想调用使用泛型的类的静态成员，而不指定类型并让编译器推断它们.

I would like to invoke static members of a class that uses generics without specifying the type and having the compiler infer them.

例如，这是我要与Static Factory成员一起使用的通用类:

For example this is the generic class I want to use, with the Static Factory member:

public class GenericClass<T>
{
    public T Member;

    // Constructor
    public GenericClass(T value)
    { 
        Member = value; 
    }

    // static factory method
    public static GenericClass<T> StaticFactory(T resultData) 
    { 
        return new GenericClass<T>(resultData); 
    }
}

如果我尝试以下操作，则不会编译:

If I try the following does not compile:

    public class Class1
    {
        public GenericClass<string> returnResult1()
        {
            return GenericClass.StaticFactory("Won't Compile, but it's clear that T is a string");
        }

        public GenericClass returnResult2()
        {
            return GenericClass.StaticFactory("Won't Compile, but it's clear that T is a string");
        }
    }

错误1使用通用类型'SampleStatic.GenericClass'需要1个类型参数

Error 1 Using the generic type 'SampleStatic.GenericClass' requires 1 type arguments

为什么静态成员不能喜欢以下内容?

Why can't I do like the following with static members?

    public void ICanInferTheType<T1>(T1 item);

    public void returnResult4()
    {
        ICanInferTheType("Compiles, recognizes type string");
    }

谢谢-

推荐答案

好，感谢@recursive！这个答案几乎是完美的，它需要在方法名称中再输入一个，例如:

Ok, thanks to @recursive! That answer is almost perfect, it requires one more in the name of the method, like this:

public static class GenericClass
{
    // static factory method
    public static GenericClass<T> StaticFactory<T>(T resultData)
    {
        return new GenericClass<T>(resultData);
    }
}

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