Question

I am trying to add some items to combobox, like its showed on msdn site, but it throws me an null reference exception

 comboBox1.Items.Add("test");

I try to change it on

ComboBox combobox1 = new ComboBox();
object test = new object();
test= "test";
comboBox1.Items.Add(test);

But it didnt works too
Can you tell me, where is the problem?
Thanks

EDIT:
SOLVED :
problem was, that I was calling

InitializeComponent();

after this code, not before, now it works as I would like before 🙂

Answer 1

Replace With

ComboBox combobox1 = new ComboBox();
object test = new object();
test= "test";
combobox1.Items = new ArrayList();
combobox1.Items.Add(test);

combobox1 and comboBox1 is not same