how to get the first element in a combobox in winforms code example

Example 1: how to show a first item in a combobox in c# winforms

comboBox1.SelectedItem = "your value"; //

Example 2: how to show a first item in a combobox in c# winforms

var item = ChunkList.SingleOrDefault(x => x.UniqueId == ChunkID);
if (item != null)
    ChunkList.Remove(item);