vb.net - Show Combobox selected item in textbox -

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public class form1 public selected integer  private sub combobox1_selectedindexchanged(byval sender system.object, byval e system.eventargs) handles combobox1.selectedindexchanged     select case combobox1.selecteditem         case "philippines (php)"             selected = 1.0         case "united states(usd)"             selected = 45.2         case "japan(jpy)"             selected = 0.36         case "canada(cad)"             selected = 35.01         case "australia(aud)"             selected = 33.34     end select end sub  private sub textbox1_textchanged(byval sender system.object, byval e system.eventargs) handles textbox1.textchanged     textbox1.text = combobox1.selecteditem end sub end class

please dont laugh casually reading basic tutorial in vs2010.. problem here nothing selected item in combobox shows in textbox..

firstly, 'selected' variable wrong type. needs string or double type. string if it's going used readability , double if intend on using in calculation.

public selected double  private sub combobox1_selectedindexchanged(byval sender system.object, byval e system.eventargs) handles combobox1.selectedindexchanged     ' call tostring() method text.     select case combobox1.selecteditem.tostring()         case "philippines (php)"             selected = 1.0         case "united states(usd)"             selected = 45.2         case "japan(jpy)"             selected = 0.36         case "canada(cad)"             selected = 35.01         case "australia(aud)"             selected = 33.34     end select     ' need catch if selected variable has not value set.     textbox1.text = selected.tostring() end sub

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