首先在窗體上放一個button和一個picturebox

private void button1_Click(object sender, EventArgs e)

{

//開啟執行緒

System.Threading.Thread thread = new System.Threading.Thread(new System.Threading.ThreadStart(this.Result));

pictureBox1.Visible = true;

button1.Enabled = false;

thread.Start();

}

private void Result()

{

bool ok = this.Do();

this.BeginInvoke(new System.Threading.ThreadStart(delegate()

{

if (ok) MessageBox.Show("成功", "提示");

else MessageBox.Show("失敗", "提示");

pictureBox1.Visible = false;

button1.Enabled = true;

}));

}

private bool Do()

{

System.Threading.Thread.Sleep(10000);

return true;

}