日期:2014-05-18 浏览次数:21125 次
int offset = 4;
        private void timer1_Tick(object sender, EventArgs e)
        {
            this.pictureBox1.Left += offset;
            if (this.pictureBox1.Left > 300) offset = -4;
            if (this.pictureBox1.Left < 0) offset = 4;
        }