fpSpread1.ActiveSheet.Columns[1].AllowAutoFilter = true;
fpSpread1.ActiveSheet.RowFilter.ShowFilterIndicator = true;
fpSpread1.ActiveSheet.RowFilter.AllString = "Show All";
fpSpread1.ActiveSheet.RowFilter.BlanksString = "Show The Blanks";
fpSpread1.ActiveSheet.RowFilter.NonBlanksString = "Show The Non-Blanks";
FpSpread1.ActiveSheet.Columns(1).AllowAutoFilter = True
FpSpread1.ActiveSheet.RowFilter.ShowFilterIndicator = True
FpSpread1.ActiveSheet.RowFilter.AllString = "Show All"
FpSpread1.ActiveSheet.RowFilter.BlanksString = "Show The Blanks"
FpSpread1.ActiveSheet.RowFilter.NonBlanksString = "Show The Non-Blanks"