أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
You can select all sheets of an excel workbook just by doing as follows
1) Make sure you are in the sheet-1
2) Then press the last sheet by holding the shift key and click it. It will automatically selects all the sheets between first and the last sheets.
Hope i'm clear.