c# - 如何在c#中制作自定义进度条

Question

我想学习如何制作如本视频中所示的进度条。

我试图在 VS C# 中复制它，但出现错误:

C# Property or indexer cannot be assigned to -- it is read only

如果我尝试使用 if (txProgressBar.Text.Length == 85)，我会在 TextBox (txProgressBar) 中得到它

System.Windows.Forms.TextBox，文本:System.Windows.Forms.TextBox，文本:Syst...██

Textbox Progressbar Tutorial VB 2010

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 CustomizedProgressBar
{
    public partial class Form1 : Form
    {
        int last = 1;

        public Form1()
        {
            InitializeComponent();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            if (txProgressBar.Text.Length = "85")
            {

                timer1.Stop();
                MessageBox.Show("Counted!");

            }else
            {
                if (last == 1)
                {
                    txProgressBar.Text = txProgressBar + "█";
                    last = 2;
                }
                else
                {
                    txProgressBar.Text = txProgressBar.Text + "█";
                    last = 1;
                }
            }

        }

        private void btnClear_Click(object sender, EventArgs e)
        {
            txProgressBar.Text = "";
        }

        private void btnStart_Click(object sender, EventArgs e)
        {
            timer1.Start();
        }

        private void btnStop_Click(object sender, EventArgs e)
        {
            timer1.Stop();
        }
    }
}

Answer 1

你的线路:

txProgressBar.Text = txProgressBar + "█";

应该是

txProgressBar.Text = txProgressBar.Text + "█"; 或 txProgressBar.Text &= "█";