1 files changed, 16 insertions, 0 deletions
diff --git a/sheet.go b/sheet.go
index c0e9287..5315d70 100644
--- a/sheet.go
+++ b/sheet.go
@@ -185,6 +185,22 @@ func (f *File) SetActiveSheet(index int) {
 	return
 }
 
+
+
+func (f *File) GetColumnsLength(sheet string) (int, error) {
+	var xlsx xlsxWorksheet
+	name := `xl/worksheets/` + strings.ToLower(sheet) + `.xml`
+	err := xml.Unmarshal([]byte(f.readXML(name)), &xlsx)
+	if ( err != nil ) {
+		return -1, err
+	}
+	rows := len(xlsx.SheetData.Row)
+
+	return rows, nil
+
+}
+
+
 // Replace xl/workbook.xml XML tags to self-closing for compatible Office Excel 2007.
 func workBookCompatibility(workbookMarshal string) string {
 	workbookMarshal = strings.Replace(workbookMarshal, `xmlns:relationships="http://schemas.openxmlformats.org/officeDocument/2006/relationships" relationships:id="`, `r:id="`, -1)