four line in textbox save in multiple excel columns c#.net W

Question

hello frnds i am new in development

please help me

i have one text box which i have type for line in that textbox

and this textbox line save in multiple columns

means

aaaaa
bbbbb
cccccc
ddddd

this four line in one textbox and save like

aaaaa           bbbbbb           ccccccc       dddddd  like

thanks