Question

I have a listbox that i want to populate with contactpersoon objects that i created.
The user completes a little form with a few textfields and when the user presses the ok button the contactpersoon object will be created.

The problem is now that i want to add the name property of the contactpersoon object to the listbox as an item. but when i want to delete it from the listbox i want to delete it by the id property of the object not the name property…

Can anyone help me with this. I tried using dictonaries but i didn’t get them to work properly.

Can anyone please advise/help me with this?

Thank you very much..

BTW Iam sorry for my bad englisch :p

Answer 1

You need to override the ToString method in the ContactPerson class. For instance:

public class ContactPerson
{
    public string Name;
    public string Id;

    public override string ToString()
    {
        return Name;
    }
}

Then, you can add the actual ContactPerson objects to your list box. For instance:

listbox.Items.Add(contactPerson);

Then, when you delete, you can loop through each item in the list and read any of the properties of the ContactPerson object, such as:

foreach(object item in listbox.Items)
{
    if((ContactPerson)item.Id == ...)
    {
        // do work
    }
}