winform中dataGridView隔行显示不同的背景色，鼠标移动上显示不同颜色，离开后变回原色

先设置奇数行颜色，这个有个自带的属性AlternatingRowsDefaultCellStyle

dataGridView1.AlternatingRowsDefaultCellStyle.BackColor = Color.AliceBlue;  //奇数行颜色

　　再在dataGridView上添加两个事件，分别是CellMouseLeave和CellMouseMove

代码如下：

        private void dataGridView1_CellMouseLeave(object sender, DataGridViewCellEventArgs e)

        {

            if (e.RowIndex > -1)

            {

                if (e.RowIndex % 2 == 0)

                    dataGridView1.Rows[e.RowIndex].DefaultCellStyle.BackColor = Color.White;

                else

                    dataGridView1.Rows[e.RowIndex].DefaultCellStyle.BackColor = Color.AliceBlue;

            }

        }

        private void dataGridView1_CellMouseMove(object sender, DataGridViewCellMouseEventArgs e)

        {

            if (e.RowIndex > -1)

            {

                dataGridView1.Rows[e.RowIndex].DefaultCellStyle.BackColor = Color.PowderBlue;

            }

        }