resizing the columns of a table, query or a datasheet form is much the same as excel. select the column, using the mouse, hover of the right side of the columns header (see the mouse pointer change to west/east arrows), mousedown and drag for manual resizing or double click to autoresize. To select and resize all columns click on the square carat top left on the header then as before, hover over any right side of any selected column and double click.
In a datasheet form, you can also use vba code to resize. reference the control (but not for labels) columnwidth property and set to -2. Something like
Code:
dim ctrl as control
for each ctrl in me.controls
if ctrl.controltype=actextbox then ctrl.columnwidth=-2
next ctrl
note that like all datasheet properties, the columnwidth property is not shown in the controls property sheet
see this link for more information
https://msdn.microsoft.com/en-us/lib...ffice.11).aspx