拼图游戏（3*3）

public int n1 = 2; private void pictureBox1_Click(object sender, EventArgs e) { if (n1 == 2) { pictureBox10.BackgroundImage = pictureBox1.BackgroundImage; pictureBox1.BackgroundImage = pictureBox2.BackgroundImage; pictureBox2.BackgroundImage = pictureBox10.BackgroundImage; n1 = 1; pictureBox10.BorderStyle = pictureBox1.BorderStyle; pictureBox1.BorderStyle = pictureBox2.BorderStyle; pictureBox2.BorderStyle = pictureBox10.BorderStyle; } if (n1 == 4) { pictureBox10.BackgroundImage = pictureBox1.BackgroundImage; pictureBox1.BackgroundImage = pictureBox4.BackgroundImage; pictureBox4.BackgroundImage = pictureBox10.BackgroundImage; n1 = 1; pictureBox10.BorderStyle = pictureBox1.BorderStyle; pictureBox1.BorderStyle = pictureBox4.BorderStyle; pictureBox4.BorderStyle = pictureBox10.BorderStyle; } }