Update Text in Combobox on Visual Studio C# -

i have problem on update text in combo box. have data on combo box if data not available, want type self. how can that?

from designer :

you need goto items property of combobox add items.

from coding :

combobox1.items.add("item1"); combobox1.items.add("item2"); combobox1.items.add("item3");