c#刷新动态标签上的值

我想问一个问题。我得到了这段代码，我的意图是让我的动态标签刷新值，而不必在标签上叠加另一个标签

using System;  
using System.Collections.Generic;  
using System.ComponentModel;  
using System.Data;  
using System.Drawing;  
using System.Linq;  
using System.Text;  
using System.Threading.Tasks;  
using System.Windows.Forms;   

namespace refresh_label
{
    public partial class Form1 : Form
    {
        Int64 num1 = 0;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Timer t1 = new Timer();
            t1.Interval = 1;
            t1.Tick += new EventHandler(lbl_refresh);
            t1.Enabled = true;
            Label lbl = new Label();
            lbl.Text = num1.ToString();
            this.Controls.Add(lbl);
        }

        private void lbl_refresh(object sender, EventArgs e)
        {
            num1++;
        }
    }
}

//on this one it's working but staking labels. is there a way to refresh the label without staking it and then clear it? thank you for your time.

private void Form1_Load(object sender, EventArgs e)
{

    Timer t1 = new Timer();
    t1.Interval = 1;
    t1.Tick += new EventHandler(lbl_refresh);
    t1.Enabled = true;
}

private void lbl_refresh(object sender, EventArgs e)
{
    num1++;

    Label lbl = new Label();
    lbl.Text = num1.ToString();
    this.Controls.Add(lbl);
    lbl.BringToFront();
}

请试试这个-

在设计时添加标签并更改代码-

private void lbl_refresh(object sender, EventArgs e)
{
    num1++;

    lbl.Text = num1.ToString();
    lbl.Update();
}

---

首先，没有必要每次都创建一个新标签。您只是想创建一个计时器并在单个标签中显示值吗？您不能只使用lbl.Text=string.Empty；要清除，lbl.Text=newValue；设置，lbl.无效；要强制重画吗？您好，谢谢，已经尝试过了，但是它说：“lbl”这个名称在当前上下文中确实存在。我可以堆叠标签，清除标签，也可以用控件移除标签，但在很长一段时间内，我一直在堆叠标签，当我清除或移除标签时，它会产生闪烁，这是我的问题。在类范围内声明lbl（与您声明num1的位置相同），以便它在整个类中都可用。好的，它工作得很好：）非常感谢。它正在工作，不再堆叠。谢谢。你好，抱歉来晚了。有趣的是，它也很有效，不管怎样，它是解决问题的好方法。谢谢：）

Int64 num1 = 0;
    public Form1()
    {
        InitializeComponent();
    }
    private void Form1_Load(object sender, EventArgs e)
    {
        Timer t1 = new Timer();
        t1.Interval = 1;
        t1.Tick += new EventHandler(lbl_refresh);
        t1.Enabled = true;
        Label lbl = new Label();

        lbl.Name="myLabel";
        lbl.Text = num1.ToString();
        this.Controls.Add(lbl);
    }

    private void lbl_refresh(object sender, EventArgs e)
    {
       Label l = Controls.Find("myLabel",true)[0] as Label;
       l.Text = num1.ToString();
       num1++;
     }