C#中Readonly属性能否修改？详解其特性与应用场景

public class MyClass
{
    public readonly int MyReadonlyField = 10;
}

MyClass obj = new MyClass();
obj.MyReadonlyField = 20; // 编译错误：不能修改只读字段

public class MyClass
{
    public readonly int MyReadonlyField;

    public MyClass(int value)
    {
        MyReadonlyField = value;
    }
}

MyClass obj = new MyClass(10);
obj.MyReadonlyField = 20; // 这是允许的，因为我们在构造函数中为其分配了值