本文介绍了使课程返回字段的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
有没有一种方法可以让类默认情况下返回其字段之一:
Is there a way to make a class return one of its fields by default like that:
public class TestClass
{
public string something;
}
TestClass test = new TestClass();
test = "alpha"; // "alpha" string is assigned to "something"
Console.Write(test); // test returns "alpha" string from "something"
如何实现此目的?
推荐答案
对于所有那些说不可能的人,)
public class TestClass
{
public string something;
public static implicit operator TestClass(string s) => new TestClass { something = s};
public static implicit operator string(TestClass testClass) => testClass.something;
}
用法:
TestClass test = new TestClass();
test = "alpha";
Console.WriteLine(test);
礼物:
alpha
注意: Console.WriteLine
将 test
作为 string
并调用 Console。由于隐式转换,WriteLine(字符串值)
重载。
Note: Console.WriteLine
takes test
as string
and calls Console.WriteLine(string value)
overload thanks to implicit conversion.
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