Autoselecting an item in a dropdown list

that is the c# code :D . The comboBox control (here 'combobox' is the instance name of your combo box control) exposes a property called selected index, when that index is set it finds the entry within the combobox at that index (position) and selectes it. (positions start at 0 by the way).

When your application goes to display your form it first 'constructs' it, at which point the forms constructor method is called, and then displays it, at which point the load event is fired which executes the code in the load event handler. Therefore placing the above code in either of those 2 locations will cause the item within the combobox at the index (position) defined as n (in other words replace 'n' with a number) to be selected.

If you wish to only select an entry in the combobox when it has exactly 1 entry i its list of items you want:

if(combobox.Items.Count == 1)
{
combobox.SelectedIndex = 0;
}

which will select the first item if it is the only item

Nice Answer John, My 5+