After you format data in the datasheet, you might need to change the column widths to fit the data. If you see ##### in a cell , it means there is not enough room in the column to display the data. You need to increase the column width to display the data. If you need to change one column, you can use the mouse to quickly change the column width. If you want to uniformly change several columns to the same column width, you can use the Column Width command on the Format menu.
Change the Width of a Column
Enter a Precise Column Width