Display highlighted data from Listbox in Textboxes

[CarlMartin]

How about this:

public struct Contacts
{
            public string FirstName;
            public string LastName;
            public string Street;
            public string City;
            public string State;
            public string Zip;

}           Contacts [] arrayOfContacts = new Contacts [20];
            int index = 0;

            private void btnExit_Click(object sender, EventArgs e)
            {
                // Close program
                this.Close();
            }

            private void btnAdd_Click(object sender, EventArgs e)
            {
                // Declare variables
                Contacts entry;
                entry.FirstName = tbxFirstName.Text;
                entry.LastName = tbxLastName.Text;
                entry.Street = tbxStreet.Text;
                entry.City = tbxCity.Text;
                entry.State = tbxState.Text;
                entry.Zip = tbxZip.Text;

                // Add contact to array
                if (index < 20)
                {
                    arrayOfContacts[index++] = entry;                  

                }

                else
                {
                    MessageBox.Show("The Address Book Can Hold a Maximum of 20 Contacts.", "Address Book Full");
                }

                
                // Display Contacts (First and Last name only) in Listbox
                lstContacts.Items.Add(entry.LastName + ", " + entry.FirstName);

                // Return message when Array reaches maximum of 20 entries

                // Clear Text Boxes
                tbxFirstName.Text = "";
                tbxLastName.Text = "";
                tbxStreet.Text = "";
                tbxCity.Text = "";
                tbxState.Text = "";
                tbxZip.Text = "";

            } 

       
    }
}

Ok, so that seems to work fine. I was trying to code the "Delete" button which will delete the entry in the array that corresponds to the name selected in the listbox. I tried to do this with a for loop seen below, but I am getting a lot of errors. Should I be doing this a different way? This works fine in another program I have that uses an array rather than an array of structures.

private void btnDelete_Click(object sender, EventArgs e)
            {
                for (int k = 0; k < arrayOfContacts.Length; k++)
            

                try
                {

                    if (arrayOfContacts[k] = lstContacts.SelectedItem.ToString())
                    {

                        arrayOfContacts[k] = null;

                    }

                }

                catch
                {

                }



            }

            //Display Refreshed Records in ListBox
            lstContacts.Items.Clear();

            for (int j = 0; j < index; j++)
            {

                if (arrayOfContacts[j] != null)
                {

                    lstContacts.Items.Add(arrayOfContacts[j].ToString().Trim());

                }