C#中关于图片的问题

Question

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (comboBox1.SelectedIndex == 1)
            {
                pictureBox1.Image = LoginTest.Properties.Resources.新建_BMP_图像__1_;
            }
            else if (comboBox1.SelectedIndex == 2)
            {
                pictureBox1.Image = LoginTest.Properties.Resources.新建_BMP_图像__2_;
            }
            ...
        }新建_BMP_图像__1_由自己添加到LoginTest.Properties.Resources里面去