The Text property visually represents the control's current value. When the DropDownStyle property is set to DropDown, the Text property can be set to any string. If the value corresponds to the display text of an item in the list, that item is then made to be the SelectedItem.
When the DropDownStyle property is set to DropDownList, the Text property can only be set to a value that corresponds to the display text of an item in the list. No other value can be applied to the Text property.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2