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Random number generator only generating one random number（15个答案）
8天前关闭。
我需要在WinForms应用程序上每X秒生成两个随机数，但我无法做到。我的目标是每2-1秒生成两个数字，以便在WinForms中显示它们。我的代码工作的唯一方式是在生成两个随机数之前放置MessageBox.Show（）。请像我五岁一样解释我为什么这样做。
我用我的代码尝试了什么：

public partial class FrmPrincipal : Form
    {
        private int temperatura = 0;
        private int umidade = 0;
        public FrmPrincipal()
        {
            InitializeComponent();
        }

        private void cadastrarNovoToolStripMenuItem_Click(object sender, EventArgs e)
        {
            FrmCadLote frmCadLote = new FrmCadLote();
            frmCadLote.ShowDialog();
        }

        private void atualizarToolStripMenuItem_Click(object sender, EventArgs e)
        {
            FrmAtualizacaoLote frmAtualizacaoLote = new FrmAtualizacaoLote();
            frmAtualizacaoLote.ShowDialog();
        }

        private void excluirToolStripMenuItem_Click(object sender, EventArgs e)
        {
            FrmExclusaoLote frmExclusaoLote = new FrmExclusaoLote();
            frmExclusaoLote.ShowDialog();
        }

        private void consultarToolStripMenuItem_Click(object sender, EventArgs e)
        {
            FrmConsultaLote frmConsultaLote = new FrmConsultaLote();
            frmConsultaLote.ShowDialog();
        }

        private void btnSensores_Click(object sender, EventArgs e)
        {
            ativaSensor();
        }

        public void ativaSensor()
        {
            Random rnd = new Random();
            Boolean sensorAtivo = false;
            if (!sensorAtivo)
            {
                // It only works when I enable this MessageBox
                MessageBox.Show("ok");
                this.temperatura = rnd.Next(0, 40);
                this.umidade = rnd.Next(0, 100);
                lblUmidade.Text = umidade.ToString();
                lblTemperatura.Text = temperatura.ToString();

                Thread.Sleep(1000);
                ativaSensor();
            }
        }
    }