in form1 i have two listboxs listbox1 listbox2 loadbutton and savebutton
this code will write listbox1.selecteditem into a txt file and loadbutton will load info
in listbox2 but i want when i click loadbutton it check if that item is already exist in
listbox2 , if not so write selected item from listbox1 and if that item is already exist in listbox2 then do not save it (msg"this item is already exist in listbox2")
but this is not work well
Dim wri As New IO.StreamWriter("e:\test.txt", True)
If ListBox2.ToString.Contains(ListBox1.Items.Item) Then ' or ListBox1.SelectedItem ? ' not work i tried more ListBox2.ToString.CompareTo(ListBox1.SelectedItem) not work ):
MsgBox("this item is already in listbox2")
Else
wri.WriteLine(ListBox1.SelectedItem, True)
End If
wri.Close()