how to make Windows form login logout application with c#

Question

please give a desktop application sample

    i have form name Login Form  there has 2 element 1st username and 2nd password
    i`ve fixed username = 'abc'  and password='123'
  
    after authenticate this username and password  if match 100%
    then Login Form will be hide and Home form will be show
  
    and there has some link when click any link result will be load on same window



please help me to give sample code