Navigate Tree:Get Previous Item Method
Short Name: Navigate Tree.Get Previous
Installed With: Base Package
Class: TreeControl Methods
Returns the tag of the item immediately before and at the same hierarchical level as the one you provide as an input. If no items exist before the item at the same level in the hierarchy, this method returns an empty string.
Parameters
| Name | Required | Description |
|---|---|---|
| tag | No | Unique tag of the item below the item whose tag you want to obtain. The default is an empty string. If you wire an empty string to tag, this method returns an empty string. If you wire an invalid tag, this method returns an error. |
| output | No | Tag of the item before the item whose tag you wire to tag. |
Remarks
The following table lists the characteristics of this method.
| Available in Run-Time Engine and Real-Time Operating System | Yes (Read/Write) |
| Settable when the VI is running | Yes |
| Loads the front panel into memory | No |
| Need to authenticate before use | No |
| Loads the block diagram into memory | No |
| Remote access disallowed | No |
| Must wait until user interface is idle | No |
| Available with control VIs | No |
| Available with global VIs | No |
| Available with strict type definitions | No |
| Available with polymorphic VIs | No |