泛型类型具有带有参数的构造函数 [英] Generic Type has constructor with parameter(s)

问题描述

大家好，

我对泛型类型有疑问.我试图制作一个泛型类，然后再制作一些带有带有参数的构造函数的类.

问题
--------
当我尝试从泛型类调用方法时，发生了错误.
这是用于代码:

Hi all,

I have a problem with generic type. I tried to make one generic class and then some classes that have constructor with parameter(s).

Problem
--------
When i''ll try to invoke method from generic class, the error was occurred.
This is for the code :

public class Test
{
    public Test(string a)
    {
        //todo..
    }
}

public class Test2
{
    public Test(string a, int b)
    {
        //todo..
    }
}

public Generic<T> where T : class, new()
{
    public bool Save(T t){
        //todo..
        return blah...
    }

}

var result = new Generic<Test>().Save(blahhh);

错误:

Error :

must be a non-abstract type with a public parameterless constructor in order to use it as parameter T in the generic type

请帮帮我.. :(谢谢

Please help me.. :( Thanks

推荐答案

首先，您发布的代码有很多错误:此编译:

First of all, your code that you published had a ton of errors: This compiles:

public class Test
{
    public Test(string a)
    {
        //todo..
    }
}

public class Test2
{
    public Test2(string a, int b)
    {
        //todo..
    }
    public Test2();
}

public class Generic<T> where T : class, new()
{
    public bool Save(T t)
    {
        //todo..
        return true;
    }
}

现在可以编译:

This will now compile:

var result = new Generic<test2>().Save(new Test2("dfd", 2));</test2>

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