WinForm（ProgressBar）进度条显示百分比

WinForm（ProgressBar）进度条显⽰百分⽐先给⼤家看⼀下效果，如下图
ProgressBar控件.net ⽬前没有带百分⽐显⽰的，要我们⾃⼰做⼀个带显⽰百分⽐的控件
在这⾥长话短说说重点的
以下是⾃⼰绘制带百分⽐的ProgressBar的核⼼代码
using System.Drawing;
using System.Windows.Forms;
namespace进度条显⽰百分⽐
{
public class MyProgressBar: ProgressBar//继承ProgressBar所有功能
{
public MyProgressBar()
{
SetStyle(erPaint | ControlStyles.AllPaintingInWmPaint, true);
}
protected override void OnPaint(PaintEventArgs e)
{
Rectangle rect = ClientRectangle;
Graphics g = e.Graphics;
ProgressBarRenderer.DrawHorizontalBar(g, rect);
rect.Inflate(-3, -3);
if (Value > 0)
{
var clip = new Rectangle(rect.X, rect.Y, (int)((float)Value / Maximum * rect.Width), rect.Height);
ProgressBarRenderer.DrawHorizontalChunks(g, clip);
}
string text = string.Format("{0}%", Value * 100 / Maximum); ;
using (var font = new Font(FontFamily.GenericSerif, 9))
{
SizeF sz = g.MeasureString(text, font);
var location = new PointF(rect.Width / 2 - sz.Width / 2, rect.Height / 2 - sz.Height / 2 + 2);
g.DrawString(text, font, Brushes.Black, location);
}
}
}
}
也可以通过代码实例化调⽤控件，以下是通过代码实例化调⽤控件核⼼代码
private void button1_Click(object sender, EventArgs e)
{
ProgressTest();
}
private void ProgressTest()
{
//更多好的实例请防问
ProgressBar progressBar = new MyProgressBar();
//progressBar.Dock = DockStyle.Fill;//设置实例化的长宽跟⽗类⼀样
progressBar.Width = 200;//设置实例化的宽度
progressBar.Height = 30;
panel1.Controls.Add(progressBar);//panel⾥⾯添加实例化的控件
//以下是实例下⼀个Timer 每150毫秒百分⽐加1
Timer timer = new Timer { Interval = 150 };
timer.Tick += (s, e) => progressBar.Value = progressBar.Value % 100 + 1;
timer.Tick += (s, e) => myProgressBar1.Value = myProgressBar1.Value % 100 + 1;
timer.Start();
}。