An unhandled exception of type 'System.StackOverflowException' occurred

Question

Why this? This is my code :

public class KPage
{
    public KPage()
    {
       this.Titolo = "example";
    }

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

I set data by the constructor. So, I'd like to do somethings like

KPage page = new KPage();
Response.Write(page.Titolo);

but I get that error on :

set { Titolo = value; }

possible duplicate of Overloading Getter and Setter Causes StackOverflow in C# or stackoverflow.com/questions/5676430/… — user7116
– user7116, Commented Apr 4, 2012 at 20:01
The Titolo getter uses the Titolo property. Whose getter uses the Titolo property. Whose getter uses the Titolo property. Whose getter uses the Titolo property. Whose getter uses the Titolo property. Whose getter uses the Titolo property. Whose getter uses the Titolo property... Kaboom. — Hans Passant
– Hans Passant, Commented Apr 4, 2012 at 20:02

Oded · Accepted Answer · 2012-04-04 20:08:03Z

39

You have an infinite loop here:

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

The moment you refer to Titolo in your code, the getter or setter call the getter which calls the getter which calls the getter which calls the getter which calls the getter... Bam - StackOverflowException.

Either use a backing field or use auto implemented properties:

public string Titolo
{
    get;
    set;
}

Or:

private string titolo;
public string Titolo
{
    get { return titolo; }
    set { titolo = value; }
}

edited Apr 4, 2012 at 20:08

answered Apr 4, 2012 at 19:59

Oded

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Comments

user7116 · Accepted Answer · 2012-04-04 19:59:55Z

3

You have a self-referential setter. You probably meant to use auto-properties:

public string Titolo
{
    get;
    set;
}

answered Apr 4, 2012 at 19:59

user7116

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Comments

Albin Sunnanbo · Accepted Answer · 2012-04-04 19:59:26Z

2

Change to

public class KPage
{
    public KPage()
    {
       this.Titolo = "example";
    }

    public string Titolo
    {
        get;
        set;
    }
}

answered Apr 4, 2012 at 19:59

Albin Sunnanbo

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