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我要在listview里删除选中的一行，数据库为sqlserver2000，现在我的代码如下：
procedure TMgrF.Button4Click(Sender: TObject);
var
i : integer;
begin
for i := ListView2.Items.Count -1 downto 0 do
if ListView2.Items[i].Selected then
try
Query3.SQL.Clear;
Query3.SQL.Add(delete from car where car_num=+ListView2.Items[i].Caption);
Query3.ExecSQL;
ListView2.Items.Delete(i);
except
MessageDlg(删除<+ListView2.Items[i].Caption+>出错,mtError,[mbok],0);
end;
end;
然后执行的时候提示说出错，我的listview2的caption里是车牌号码，比如京A1234567
他就提示说京A1234567无效！
这个问题到底错在哪儿？？？？
Query3.SQL.Add(delete from car where car_num=+ListView2.Items[i].Caption+);
Query3.SQL.Add(delete from car where car_num=+ListView2.Items[i].Caption + ) ;
