Name of the TreeView control to be refreshed.

Indicates the start position for the refresh. If this parameter is not specified:

• For a TreeView control based on a data file, the function behaves like if the taInit constant was passed as parameter.
• For a TreeView Table control populated programmatically, the function has no effect.

This parameter can correspond to:

• An integer. The refresh is performed from this position. The selected row is not modified.
  For a TreeView control based on a data file, the "Display a row" event for the <Position> row is executed. The current element in the TreeView control is the same as the current record in the data file.
  For a TreeView Table control populated programmatically, the <Position> row is re-displayed.
• A character or a constant:
  

  	TreeView control with in-memory data source	TreeView control populated programmatically
  taCurrentSelection	Re-displays the TreeView control. The selected row is unchanged.	Re-displays the TreeView control. The selected row is unchanged.
  taCurrentRecord	Re-runs the linked query if necessary. Takes into account the records added, modified or deleted by other computers. Selects the current record. The scrollbar position is stored as long as the selection remains visible. Runs the "Initializing" and "End of initialization" events of the control, then the "Select a row" event for the selected row (even if it is not modified).	No effect.
  taStart	Refreshes the TreeView control by setting the position at the beginning of the control. The first row is selected. This row corresponds to the first record.	No effect.
  taInit	Runs the initialization code of the TreeView control (initialization code and end of initialization code). Fills the TreeView control. The first row of the TreeView control is selected. This row corresponds to the current record at the end of the initialization code of the TreeView control.	No effect.
  taReExecuteQuery	Re-runs the query linked to the TreeView control. Refreshes the TreeView control by setting the position at the beginning of the control. The first row of the TreeView control is selected. This row corresponds to the first record. Caution: Only the query linked to the TreeView control is run. If specific options have been specified with <Source>.ExecuteQuery (hModifyFile, for example), these options are ignored.	No effect.