我在使用datawindow删除数据时出现
row changed between retrieve and update
no changes made to database
delete from main where name='h'

我用的删除代码是：
int deleteid
string name

deleteid=dw_1.getRow()
name= dw_1.object.name[dw_1.getRow()]

if messagebox("提示信息：","真的删除"+"'客户名称为:'"+name+"的客户信息么？",Question!,yesno!,2)=2 then
return -1
else

end if

dw_1.deleterow(deleteid)

dw_1.update()