Size Command
Use the Size command to make two or more selected components have the same width and/or height on the form.
Select two or more components and use the Size command:
The order of selection on the Design tab is important. The first component selected is considered the anchor. All other objects will be sized to match this object. (To select multiple components, hold the Shift key down.)
If you select the Remember check box, the width and height selections you make in this dialog are remembered the next time you display it. If you do not select Remember, the selections will be set to ‘No Change’.
Also See
Layout Managers in the