lllegal character in put file,该怎么处理

lllegal character in put file
edit1.Text:=treeview1.Selected.Text;

edit2.Text:=treeview1.Selected.Parent.Text;
edit5.Text:=edit1.Text   +   "/ "   +   edit2.Text;

提示lllegal   character   in   put   file: " "($22)
错误出现在edit5.Text:=edit1.Text   +   "/ "   +   edit2.Text;
错误在哪


------解决方案--------------------
.....楼主刚用delphi吧，现看下pascal基本语法吧~~，delphi一点不麻烦只是你还没用习惯
procedure Tf_yxszk.TreeView1Click(Sender: TObject);
begin
edit1.Text:=treeview1.Selected.Text;
if treeview1.Selected.Parent.Index <> -1 then
begin // 多个语句加begin end框起来
edit2.Text:=treeview1.Selected.Parent.Text;
edit5.Text:=edit2.Text + '/ ' + edit1.Text;
end // else前面语句最后不要加分号~
else
edit2.Text:= '全部 ';
end;