（无限地调用自己），不可避免地会导致堆栈溢出。

当然这就是你的意思：

 私人字符串标题; 
 public string Headline 
 {
 get {return headline; } 
 set {headline = value; } 
} 
 

请注意，如果您不打算进一步介绍获取/设置逻辑，因为这正是你在后台执行的第一个例子。

当学习c＃中的属性时，有助于将它们视为数据，但作为一对具有以下签名的方法：

  public string get_Headline（）{...} 
 public void set_Headline（string value）{...} 
 

事实上，这正是编译器定义的他们。

现在很容易看到您的初始代码会递归地调用 set_Headline 。

People of ***. I am new to c# and this is the first time I have not been able to find an answer to one of my elementary questions. Who can help me?!I am trying to define set logic for a public instance field.

This runs flawlessly,

public string Headline {get; set;}

This results in stack overflow

public string Headline
{ get { return Headline; } set { Headline = value; } }

You're calling the getter and setter recursively (calling themselves infinitely), inevitably causing a stack overflow.

Surely this is what you mean to be doing:

private string headline;
public string Headline
{
    get { return headline; }
    set { headline = value; }
}

Note that this is unnecessary if you don't plan to introduce any further get/set logic, as this is exactly what your first example does behind the scenes.

When learning about properties in c#, it helps to think of them not as data, but as a pair of methods with the following signatures:

public string get_Headline() { ... }
public void set_Headline(string value) { ... }

In fact, this is exactly how the compiler defines them.

Now it's easy to see that your initial code would call set_Headline recursively.