vb.net - Visual Basic - Simple Bank Transaction -

i believe working correctly cannot labels display calculated data, don't know messed here. appreciated.

imports system.io public class form1     dim decmakewithdrawal decimal     dim decbalace decimal      private sub btnexit_click(sender object, e eventargs) handles btnexit.click         'close form         me.close()     end sub       private sub btndeposit_click(sender object, e eventargs) handles btndeposit.click         dim decmakedeposit decimal          'add deposit         decmakedeposit = cdec(inputbox("please enter deposit if have any"))     end sub      public sub btnwithdraw_click(sender object, e eventargs) handles btnwithdraw.click         dim decbalance decimal          decmakewithdrawal = cdec(inputbox("please enter amount withdraw"))         if decbalance <= 0             messagebox.show("insufficient funds")         end if     end sub      private sub mainform_load(sender object, e eventargs) handles mybase.load         dim decintrate decimal          decintrate = cdec(inputbox("please enter interest rate:"))      end sub      private function decinttrans() object         throw new notimplementedexception     end function      private sub btncalculate_click(sender object, e eventargs) handles btncalculate.click         dim decintertrans decimal         dim decinterest decimal          decinterest = cdec(decinttrans())         decintertrans += 1d     end sub end class      public class transaction     'create member variables properties      public decbalance decimal     private decintrate decimal     private decinterest decimal     private inttrans integer     private decmakewithdrawal decimal     private decmakedeposit decimal     private decinterestearned decimal       'create property procedures     public property balance decimal                     return decbalance         end          set(value decimal)             decbalance = value         end set     end property      public property intrate double                     return decintrate         end          set(value double)             decintrate = cdec(value)         end set     end property      public property interesttotal double                     return decinterest         end         set(value double)             decinterest = cdec(value)         end set     end property        'calculate amount of interest current period      'stores value in interest property, , adds balance property     public sub addinterest(byval addinterest integer)         decinterestearned = decbalance * (decintrate / 12)     end sub       'add deposit     public sub adddeposit(byval adddeposit decimal)         decmakedeposit += adddeposit      end sub      'withdraw     public sub subtractwithdrawl(byval subtractwithdrawal double)         if decmakewithdrawal >= subtractwith()             decmakewithdrawal = cdec(decmakewithdrawal - subtractwith())         else             messagebox.show("no sufficient balance")         end if     end sub      private function subtractwith() double         throw new notimplementedexception     end function end class 

i feel code being complicated stuff have added not using @ present.

so things, i've cut stuff out , corrected errors see. lot of tweaking still needed , member blackwood states should validate values input user before processing data.

yet still, start off , set on right path, try code below , don't forget compare original can see going wrong.

good luck

option explicit imports system.io  public class form1  dim mytransactor transaction  private sub mainform_load(sender object, e eventargs) handles mybase.load   dim decintrate decimal   mytransactor = new transaction()   decintrate = cdec(inputbox("please enter interest rate:"))   mytransactor.intrate = decintrate end sub  private sub btnexit_click(sender object, e eventargs) handles btnexit.click   'close form   me.close() end sub  private sub btndeposit_click(sender object, e eventargs) handles btndeposit.click   dim decmakedeposit decimal   decmakedeposit = cdec(inputbox("please enter deposit if have any"))   mytransactor.adddeposit = decmakedeposit  end sub  public sub btnwithdraw_click(sender object, e eventargs) handles btnwithdraw.click   decmakewithdrawal = cdec(inputbox("please enter amount withdraw"))   mytransactor.subtractwithdrawl = decmakewithdrawal  end sub  private sub btncalculate_click(sender object, e eventargs) handles btncalculate.click   mytransactoraddinterest   messagebox.show(mytransactor.interestearned &  "interest add balance. total balance " & mytranasactor.balance) end sub  end class       public class transaction  'create member variables properties public decbalance decimal private decintrate decimal private decinterestearned decimal  'create property procedures public property balance decimal       return decbalance   end   set(value decimal)     decbalance = value   end set end property  public property intrate double       return decintrate   end   set(value double)     decintrate = cdec(value)   end set end property  public property interestearned double       return decinterestearned    end   set(value double)     decinterestearned = cdec(value)   end set end property  'calculate amount of interest current period  'stores value in interest property, , adds balance property public sub addinterest()   decinterestearned = decbalance * (decintrate / 12)   decbalance =+ decinterestearned  end sub  'add deposit public sub adddeposit(byval depositvalue decimal)   decbalance=+ depositvalue end sub  'withdraw public sub subtractwithdrawl(byval withdrawalvalue double)   if decbalance >= withdrawalvalue     decbalance =-  withdrawalvalue    else     messagebox.show("no sufficient balance")   end if end sub  end class