method Edit.SelectLine (Index as Long)
Selects a line by code.

TypeDescription
Index as Long A long expression that indicates the index of line being selected. The index is 1 based.
Use the SelectLine method to select a line by code. Use the SelText property to retrieve the selected text. Use the GetSelection method to determine the coordinates of the selected text. Use the SetSelection method to select a text giving the end and start coordinates. The SelStart property returns or sets the starting point of text selected; indicates the position of the insertion point if no text is selected.