我可以仅使用C＃中的对象名称来访问对象属性吗？

Question

I have a simple class with some private properties and 2 public properties (value and type). I'm trying to find a way to call the object so that it returns its value property without having to call obj.value. I don't think it's possible.

Here's what I have in mind:

public class myclass {
   private int property1;
   private int property2;
   public string value;
   public string type;

   public myclass(int property1, int property2, string value, string type)
   {
       this.property1 = property1;
       this.property2 = property2;
       this.value = value;
       this.type = type;
   }
}

var obj = new myclass(1, 2, "abc", "string");
console.write(obj.value);   // returns abc
console.write(obj.type);   // returns string
console.write(obj);    // expecting abc

Is there a way the last line returns abc with this syntax?

You're asking why I want to achieve something like this? I am building a service with a Javascript programming module. The objects are variables and I want the users to access them by simply writing obj instead of obj.value . I need this behavior in C# (and not Javascript) because the Javascript is calling back the backend objects. If I would not have to keep the private properties that would be easy but I need to have them.

UPDATE: In order to be more clear: this class is to be called by a Javascript interpreter (Jint in this case) and the class has to update the database if its value is updated, so the need for the private properties. Here is my actual code:

public class SmartNumeric : ISmartVariable
{
    private Boolean _simulation;
    private Guid UserId;
    private long userKeyId;
    private long variableKeyId;
    private string Name;
    public string type
    {
        get {
            return "numeric";
        }
    }
    private float _value;
    public float value
    {
        get {
            return _value;
        }

        set {
            _value = value;

            if (!_simulation)
                new SmartCommon().SetValue(userKeyId, variableKeyId, value.ToString());
        }
    }

    public SmartNumeric(Guid UserId, long userKeyId, long variableKeyId, string Name, float value, Boolean simulation)
    {
        this.Name = Name;
        this._value = value;
        this.UserId = UserId;
        this.userKeyId = userKeyId;
        this.variableKeyId = variableKeyId;
        this._simulation = simulation;
    }
}

So for example a user will write its own script like

a = 45;

which is more natural in Javascript than

a.value = 45;

where a refers to a SmartNumeric object in C#. The object receives an update and this is where I need to go back to the database to update the value and need the additional properties.

Answer 1

Yes, You can override the ToString method in the MyClass to return the value of the property you want to, like

public override string ToString()
{
    return this.value;
}

With this added to your class, the last line would print you "abc"

NOTE: what happens here is that, basically when you call Console.WriteLine(<Something>) , this tries to call the ToString() method which is there in the class Object. Now we know that the Object class is the Super Class of any class that we have. So, we override the ToString() method and we return whatever string we want to return from our class.

Your last line would have to be something like Console.WriteLine(obj.ToString()) .

Hope this Helps!

Answer 2

The final answer is that it cannot be done. A variable is a variable and an object is an object. Trying to go away from that and cheat will only bring other problems and I can't see how I can associate other properties to a variable without making it an object. So it'll have to be an object and the value will be accessed with obj.value.