conn .ConnectionString = @Server=LAPTOP-F93UMPMII;Initial Catalog=student;Integrated Security=ture;有什么错误

这段代码中出现了一个拼写错误，将 `ture` 写成了 `true`。正确的写法应该是 `Integrated Security=true`。因此，应该将代码改为：

conn.ConnectionString = @"Server=LAPTOP-F93UMPMII;Initial Catalog=student;Integrated Security=true;";