如何在C＃中重载运算符？

How to Overload Get Operator in C#?

我有一个存储价值的类。

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public class Entry<T>
{
private T _value;

public Entry() { }

public Entry(T value)
{
_value = value;
}

public T Value
{
get { return _value; }
set { _value = value; }
}

// overload set operator.
public static implicit operator Entry<T>(T value)
{
return new Entry<T>(value);
}
}

要使用此类：

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public class Exam
{
public Exam()
{
ID = new Entry<int>();
Result = new Entry<int>();

// notice here I can assign T type value, because I overload set operator.
ID = 1;
Result ="Good Result.";

// this will throw error, how to overload the get operator here?
int tempID = ID;
string tempResult = Result;

// else I will need to write longer code like this.
int tempID = ID.Value;
string tempResult = Result.Value;
}

public Entry<int> ID { get; set; }
public Entry<string> Result { get; set; }
}

我可以超载设置操作员，我可以直接做"id=1"。

但当我执行"int tempid=id；"时，它将抛出错误。

如何重载get运算符，以便我可以执行"int tempid=id；"而不是"int tempid=id.value；"？