Worksheet FilterID

The following table shows the file extensions and the appropriate FilterId values for worksheets.

Extension	File Description	Import Options Links	FilterId Values
.ACCDB	Microsoft Access 2007 and 2010	Import Automation Options	"accdb"
.BLN	Golden Software Blanking	Golden Software [.BLN] Import Automation Options	"blnw"
.BNA	Atlas Boundary	Atlas Boundary [.BNA] Import Automation Options	"bnaw"
.DAT	ASCII Data Files	Import Automation Options	"dat"
.DBF	Database		"dbf"
.LAS	LAS LiDAR Binary	Import Automation Options	"lidarw"
.MDB	Microsoft Access	Import Automation Options	"mdb"
.SLK	Sylk Spreadsheet		"slk"
.TXT	ASCII Data Files	Import Automation Options	"txt"
.XLS	Excel Spreadsheet	Import Automation Options	"xls"
.XLSX	Excel 2007and 2010 Spreadsheet	Import Automation Options	"xlsx"
.XLSM	Excel 2007and 2010 Spreadsheet	Import Automation Options	"xlsm"

Remarks

FilterId is required if no recognized file extension is used in FileName, or if the file extension supplied can be used by more than one file format.
FilterId is case-sensitive. File extensions are case-insensitive.
If FilterId is used the file extension is optional.