You must create your own class type and override the ToString() method to return the text you want. Here is the sample code:
public class ComboboxItem
{
public string Text { get; set; }
public object Value { get; set; }
public override string ToString()
{
return Text;
}
}
Usage method will be:
private void Test()
{
ComboboxItem item1 = new ComboboxItem();
item1.Text = "Yes";
item1.Value = 1;
comboBox1.Items.Add(item1);
ComboboxItem item2 = new ComboboxItem();
item2.Text = "No";
item2.Value = 2;
comboBox1.Items.Add(item2);
comboBox1.SelectedIndex = 0;
}