int a=0;
private void button1_Click(object sender, EventArgs e)
{
Bitmap picture1 = new Bitmap(@"C:\Users\Administrator\Pictures\LifeFrame\名.jpg");
Bitmap picture2 = new Bitmap(@"C:\Users\Administrator\Pictures\MIKU.jpg");
Bitmap picture3 = new Bitmap(@"C:\Users\Administrator\Pictures\1.jpg");
Bitmap picture4 = new Bitmap(@"C:\Users\Administrator\Pictures\2.jpg");
Bitmap picture5 = new Bitmap(@"C:\Users\Administrator\Pictures\萌MIKU.jpg");
switch (a)
{
case 0: pictureBox1.Image = picture1; a = a + 1; break;
case 1: pictureBox1.Image = picture2; a = a + 1; break;
case 2: pictureBox1.Image = picture3; a = a + 1; break;
case 3: pictureBox1.Image = picture4; a = a + 1; break;
case 4: pictureBox1.Image = picture5; a = a + 1; break;
case 5: a = a + 1; if (a > 5)  a = 1; break;
}
这样能循环了，不过不知道为啥，最后一张转到第一张的时候要点两下，求LZ大大解救