# Graphical Panel Controls: Drop Down List

A Drop Down List control allows input from a list of items. The elements of the list can be either manually entered within the control or taken from the list of name/value pairs in a state-encoded signal.

![Figure 1: A Drop Down List control with four options, the third of which is currently selected.](https://content.gitbook.com/content/9uNvoSkR7R6QY16gR3CY/blobs/J9lqvneznakz6k0MfRvI/gpctrlDropDownList.gif)

In addition to the [Common Control Properties](https://docs.intrepidcs.com/vspy-3-documentation/3.9.14/vehicle-spy-main-menus/main-menu-measurement/graphical-panels/graphical-panels-tools/graphical-panel-controls-common-control-properties) that apply to all controls, the Drop Down List control has an additional property described in Table 1.

**Table 1: Drop Down List Control Properties**

| Property | Function and Options                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| -------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| List     | Double-click this entry to bring up a dialog box where you can enter the items for the list and the values they represent (Figure 2). Simply type a name in the **List Item** box and a matching value in the **Value** box, then click the **Add** button or press Enter. Vehicle Spy will add the item to the list in the bottom of the dialog, and automatically increment the **Value** counter for the next item as a convenience. You can also click **Load From Signal** to import name/value pairs from a state-encoded signal. |

![Figure 2: Entering data elements into a Drop Down List control.](https://content.gitbook.com/content/9uNvoSkR7R6QY16gR3CY/blobs/97Gzx5QW5DzntCmg2SNg/gpctrlDropDownList_Setup.gif)