如何创建圆形样式进度条
问题描述 投票：0回答：5
我需要帮助来实现这样的圆形进度条：
如何通过增加
Value5个回答
23
投票
投票
您有几个选项 - 第一个是模板化
ProgressBar另一种选择是从头开始创建您自己的控件。您可以执行以下操作：
- 创建新的用户控件
- 向其添加新的值、最大和最小依赖属性。
- 处理用户控件中的值、最大值和最小值属性更改事件以计算角度属性。
- 在后面的代码中构造两个“饼图”（参见这篇文章）并将它们添加到 UI。
21
投票
投票
我知道这是一个老问题，但无论如何这是我的解决方案：
对于WINFORM：
using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
public class CircularProgressBar : Control
{
#region Enums
public enum _ProgressShape
{
Round,
Flat
}
public enum _TextMode
{
None,
Value,
Percentage,
Custom
}
#endregion
#region Private Variables
private long _Value;
private long _Maximum = 100;
private int _LineWitdh = 1;
private float _BarWidth = 14f;
private Color _ProgressColor1 = Color.Orange;
private Color _ProgressColor2 = Color.Orange;
private Color _LineColor = Color.Silver;
private LinearGradientMode _GradientMode = LinearGradientMode.ForwardDiagonal;
private _ProgressShape ProgressShapeVal;
private _TextMode ProgressTextMode;
#endregion
#region Contructor
public CircularProgressBar()
{
SetStyle(ControlStyles.SupportsTransparentBackColor, true);
SetStyle(ControlStyles.Opaque, true);
this.BackColor = SystemColors.Control;
this.ForeColor = Color.DimGray;
this.Size = new Size(130, 130);
this.Font = new Font("Segoe UI", 15);
this.MinimumSize = new Size(100, 100);
this.DoubleBuffered = true;
this.LineWidth = 1;
this.LineColor = Color.DimGray;
Value = 57;
ProgressShape = _ProgressShape.Flat;
TextMode = _TextMode.Percentage;
}
#endregion
#region Public Custom Properties
/// <summary>Determina el Valor del Progreso</summary>
[Description("Valor Entero que determina la posision de la Barra de Progreso."), Category("Behavior")]
public long Value
{
get { return _Value; }
set
{
if (value > _Maximum)
value = _Maximum;
_Value = value;
Invalidate();
}
}
[Description("Obtiene o Establece el Valor Maximo de la barra de Progreso."), Category("Behavior")]
public long Maximum
{
get { return _Maximum; }
set
{
if (value < 1)
value = 1;
_Maximum = value;
Invalidate();
}
}
[Description("Color Inicial de la Barra de Progreso"), Category("Appearance")]
public Color BarColor1
{
get { return _ProgressColor1; }
set
{
_ProgressColor1 = value;
Invalidate();
}
}
[Description("Color Final de la Barra de Progreso"), Category("Appearance")]
public Color BarColor2
{
get { return _ProgressColor2; }
set
{
_ProgressColor2 = value;
Invalidate();
}
}
[Description("Ancho de la Barra de Progreso"), Category("Appearance")]
public float BarWidth
{
get { return _BarWidth; }
set
{
_BarWidth = value;
Invalidate();
}
}
[Description("Modo del Gradiente de Color"), Category("Appearance")]
public LinearGradientMode GradientMode
{
get { return _GradientMode; }
set
{
_GradientMode = value;
Invalidate();
}
}
[Description("Color de la Linea Intermedia"), Category("Appearance")]
public Color LineColor
{
get { return _LineColor; }
set
{
_LineColor = value;
Invalidate();
}
}
[Description("Ancho de la Linea Intermedia"), Category("Appearance")]
public int LineWidth
{
get { return _LineWitdh; }
set
{
_LineWitdh = value;
Invalidate();
}
}
[Description("Obtiene o Establece la Forma de los terminales de la barra de progreso."), Category("Appearance")]
public _ProgressShape ProgressShape
{
get { return ProgressShapeVal; }
set
{
ProgressShapeVal = value;
Invalidate();
}
}
[Description("Obtiene o Establece el Modo como se muestra el Texto dentro de la barra de Progreso."), Category("Behavior")]
public _TextMode TextMode
{
get { return ProgressTextMode; }
set
{
ProgressTextMode = value;
Invalidate();
}
}
[Description("Obtiene el Texto que se muestra dentro del Control"), Category("Behavior")]
public override string Text { get; set; }
#endregion
#region EventArgs
protected override void OnResize(EventArgs e)
{
base.OnResize(e);
SetStandardSize();
}
protected override void OnSizeChanged(EventArgs e)
{
base.OnSizeChanged(e);
SetStandardSize();
}
protected override void OnPaintBackground(PaintEventArgs p)
{
base.OnPaintBackground(p);
}
#endregion
#region Methods
private void SetStandardSize()
{
int _Size = Math.Max(Width, Height);
Size = new Size(_Size, _Size);
}
public void Increment(int Val)
{
this._Value += Val;
Invalidate();
}
public void Decrement(int Val)
{
this._Value -= Val;
Invalidate();
}
#endregion
#region Events
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
using (Bitmap bitmap = new Bitmap(this.Width, this.Height))
{
using (Graphics graphics = Graphics.FromImage(bitmap))
{
graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBilinear;
graphics.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
graphics.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
//graphics.Clear(Color.Transparent); //<-- this.BackColor, SystemColors.Control, Color.Transparent
PaintTransparentBackground(this, e);
//Dibuja el circulo blanco interior:
using (Brush mBackColor = new SolidBrush(this.BackColor))
{
graphics.FillEllipse(mBackColor,
18, 18,
(this.Width - 0x30) + 12,
(this.Height - 0x30) + 12);
}
// Dibuja la delgada Linea gris del medio:
using (Pen pen2 = new Pen(LineColor, this.LineWidth))
{
graphics.DrawEllipse(pen2,
18, 18,
(this.Width - 0x30) + 12,
(this.Height - 0x30) + 12);
}
//Dibuja la Barra de Progreso
using (LinearGradientBrush brush = new LinearGradientBrush(this.ClientRectangle,
this._ProgressColor1, this._ProgressColor2, this.GradientMode))
{
using (Pen pen = new Pen(brush, this.BarWidth))
{
switch (this.ProgressShapeVal)
{
case _ProgressShape.Round:
pen.StartCap = LineCap.Round;
pen.EndCap = LineCap.Round;
break;
case _ProgressShape.Flat:
pen.StartCap = LineCap.Flat;
pen.EndCap = LineCap.Flat;
break;
}
//Aqui se dibuja realmente la Barra de Progreso
graphics.DrawArc(pen,
0x12, 0x12,
(this.Width - 0x23) - 2,
(this.Height - 0x23) - 2,
-90,
(int)Math.Round((double)((360.0 / ((double)this._Maximum)) * this._Value)));
}
}
#region Dibuja el Texto de Progreso
switch (this.TextMode)
{
case _TextMode.None:
this.Text = string.Empty;
break;
case _TextMode.Value:
this.Text = _Value.ToString();
break;
case _TextMode.Percentage:
this.Text = Convert.ToString(Convert.ToInt32((100 / _Maximum) * _Value));
break;
default:
break;
}
if (this.Text != string.Empty)
{
using (Brush FontColor = new SolidBrush(this.ForeColor))
{
int ShadowOffset = 2;
SizeF MS = graphics.MeasureString(this.Text, this.Font);
SolidBrush shadowBrush = new SolidBrush(Color.FromArgb(100, this.ForeColor));
//Sombra del Texto:
graphics.DrawString(this.Text, this.Font, shadowBrush,
Convert.ToInt32(Width / 2 - MS.Width / 2) + ShadowOffset,
Convert.ToInt32(Height / 2 - MS.Height / 2) + ShadowOffset
);
//Texto del Control:
graphics.DrawString(this.Text, this.Font, FontColor,
Convert.ToInt32(Width / 2 - MS.Width / 2),
Convert.ToInt32(Height / 2 - MS.Height / 2));
}
}
#endregion
//Aqui se Dibuja todo el Control:
e.Graphics.DrawImage(bitmap, 0, 0);
graphics.Dispose();
bitmap.Dispose();
}
}
}
private static void PaintTransparentBackground(Control c, PaintEventArgs e)
{
if (c.Parent == null || !Application.RenderWithVisualStyles)
return;
ButtonRenderer.DrawParentBackground(e.Graphics, c.ClientRectangle, c);
}
/// <summary>Dibuja un Circulo Relleno de Color con los Bordes perfectos.</summary>
/// <param name="g">'Canvas' del Objeto donde se va a dibujar</param>
/// <param name="brush">Color y estilo del relleno</param>
/// <param name="centerX">Centro del Circulo, en el eje X</param>
/// <param name="centerY">Centro del Circulo, en el eje Y</param>
/// <param name="radius">Radio del Circulo</param>
private void FillCircle(Graphics g, Brush brush, float centerX, float centerY, float radius)
{
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBilinear;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
using (System.Drawing.Drawing2D.GraphicsPath gp = new System.Drawing.Drawing2D.GraphicsPath())
{
g.FillEllipse(brush, centerX - radius, centerY - radius,
radius + radius, radius + radius);
}
}
#endregion
}
实施：
- 将源代码放入 WinForms 项目中任意位置的新类中，将该类命名为“CircularProgressBar.cs”。
- 编译项目。
- 编译后，您应该在工具栏上看到一个新的控件或“组件”。
- 将此新控件拖放到任何表单中并自定义其属性。
控制看起来像这样：
享受吧。
16
投票
投票
这有点棘手，但并非不可能。这是我使用平滑动画进行指导的实现。应该使用值转换器来创建 CircularProgressBar。
CircularProgressBar.cs
public partial class CircularProgressBar : ProgressBar
{
public CircularProgressBar()
{
this.ValueChanged += CircularProgressBar_ValueChanged;
}
void CircularProgressBar_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
{
CircularProgressBar bar = sender as CircularProgressBar;
double currentAngle = bar.Angle;
double targetAngle = e.NewValue / bar.Maximum * 359.999;
DoubleAnimation anim = new DoubleAnimation(currentAngle, targetAngle, TimeSpan.FromMilliseconds(500));
bar.BeginAnimation(CircularProgressBar.AngleProperty, anim, HandoffBehavior.SnapshotAndReplace);
}
public double Angle
{
get { return (double)GetValue(AngleProperty); }
set { SetValue(AngleProperty, value); }
}
// Using a DependencyProperty as the backing store for Angle. This enables animation, styling, binding, etc...
public static readonly DependencyProperty AngleProperty =
DependencyProperty.Register("Angle", typeof(double), typeof(CircularProgressBar), new PropertyMetadata(0.0));
public double StrokeThickness
{
get { return (double)GetValue(StrokeThicknessProperty); }
set { SetValue(StrokeThicknessProperty, value); }
}
// Using a DependencyProperty as the backing store for StrokeThickness. This enables animation, styling, binding, etc...
public static readonly DependencyProperty StrokeThicknessProperty =
DependencyProperty.Register("StrokeThickness", typeof(double), typeof(CircularProgressBar), new PropertyMetadata(10.0));
}
AngleToPointConverter.cs
class AngleToPointConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
double angle = (double)value;
double radius = 50;
double piang = angle * Math.PI / 180;
double px = Math.Sin(piang) * radius + radius;
double py = -Math.Cos(piang) * radius + radius;
return new Point(px, py);
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
}
AngleToIsLargeConverter.cs
class AngleToIsLargeConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
double angle = (double)value;
return angle > 180;
}
public object ConvertBack(object value, Type targetTypes, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
}
应用程序.xaml
<Application x:Class="WpfApplication1.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
StartupUri="MainWindow.xaml"
xmlns:my="clr-namespace:WpfApplication1">
<Application.Resources>
<my:AngleToPointConverter x:Key="prConverter"/>
<my:AngleToIsLargeConverter x:Key="isLargeConverter"/>
<Style x:Key="circularProgressBar" TargetType="my:CircularProgressBar">
<Setter Property="Value" Value="10"/>
<Setter Property="Maximum" Value="100"/>
<Setter Property="StrokeThickness" Value="10"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="my:CircularProgressBar">
<Canvas Width="100" Height="100">
<Ellipse Width="100" Height="100" Stroke="LightGray"
StrokeThickness="1"/>
<Path Stroke="{TemplateBinding Background}"
StrokeThickness="{TemplateBinding StrokeThickness}">
<Path.Data>
<PathGeometry>
<PathFigure x:Name="fig" StartPoint="50,0">
<ArcSegment RotationAngle="0" SweepDirection="Clockwise"
Size="50,50"
Point="{Binding Path=Angle, Converter={StaticResource prConverter}, RelativeSource={RelativeSource FindAncestor, AncestorType=ProgressBar}}"
IsLargeArc="{Binding Path=Angle, Converter={StaticResource isLargeConverter}, RelativeSource={RelativeSource FindAncestor, AncestorType=ProgressBar}}"
>
</ArcSegment>
</PathFigure>
</PathGeometry>
</Path.Data>
</Path>
<Border Width="100" Height="100">
<TextBlock Foreground="Gray" HorizontalAlignment="Center" VerticalAlignment="Center"
Text="{Binding Path=Value, StringFormat={}%{0},
RelativeSource={RelativeSource TemplatedParent}}"
FontSize="{TemplateBinding FontSize}"/>
</Border>
</Canvas>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Application.Resources>
可以通过添加更多属性（例如 InnerRadius、Radius 等）来进行更多自定义
6
投票
投票
你看过
ValueConverterTemplateBinding编辑：
在模板中：
添加一个圆圈，填充黄色。
在顶部添加另一个圆圈，颜色为橙色。
使用值转换器（或多值转换器）返回 2 中添加的圆的裁剪几何图形（可能使用圆弧段）。
在 2 中剪裁圆，并在 3 中返回几何图形。
投反对票的人还给我我的代表。
0
投票
投票
using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
namespace Your Namespace
{
public class CircularProgressBar : Control
{
#region Enums
public enum _ProgressShape
{
Round,
Flat
}
public enum _TextMode
{
None,
Value,
Percentage,
Custom
}
#endregion
#region Private Variables
private long _Value;
private long _Maximum = 100;
private int _LineWitdh = 1;
private float _BarWidth = 14f;
private Color _ProgressColor1 = Color.Orange;
private Color _ProgressColor2 = Color.Orange;
private Color _LineColor = Color.Silver;
private LinearGradientMode _GradientMode = LinearGradientMode.ForwardDiagonal;
private _ProgressShape ProgressShapeVal;
private _TextMode ProgressTextMode;
#endregion
#region Contructor
public CircularProgressBar()
{
SetStyle(ControlStyles.SupportsTransparentBackColor, true);
SetStyle(ControlStyles.Opaque, true);
this.BackColor = SystemColors.Control;
this.ForeColor = Color.DimGray;
this.Size = new Size(130, 130);
this.Font = new Font("Segoe UI", 15);
this.MinimumSize = new Size(100, 100);
this.DoubleBuffered = true;
this.LineWidth = 1;
this.LineColor = Color.DimGray;
Value = 57;
ProgressShape = _ProgressShape.Flat;
TextMode = _TextMode.Percentage;
}
#endregion
#region Public Custom Properties
/// <summary>Determina el Valor del Progreso</summary>
[Description("Valor Entero que determina la posision de la Barra de Progreso."), Category("Behavior")]
public long Value
{
get { return _Value; }
set
{
if (value > _Maximum)
value = _Maximum;
_Value = value;
Invalidate();
}
}
[Description("Obtiene o Establece el Valor Maximo de la barra de Progreso."), Category("Behavior")]
public long Maximum
{
get { return _Maximum; }
set
{
if (value < 1)
value = 1;
_Maximum = value;
Invalidate();
}
}
[Description("Color Inicial de la Barra de Progreso"), Category("Appearance")]
public Color BarColor1
{
get { return _ProgressColor1; }
set
{
_ProgressColor1 = value;
Invalidate();
}
}
[Description("Color Final de la Barra de Progreso"), Category("Appearance")]
public Color BarColor2
{
get { return _ProgressColor2; }
set
{
_ProgressColor2 = value;
Invalidate();
}
}
[Description("Ancho de la Barra de Progreso"), Category("Appearance")]
public float BarWidth
{
get { return _BarWidth; }
set
{
_BarWidth = value;
Invalidate();
}
}
[Description("Modo del Gradiente de Color"), Category("Appearance")]
public LinearGradientMode GradientMode
{
get { return _GradientMode; }
set
{
_GradientMode = value;
Invalidate();
}
}
[Description("Color de la Linea Intermedia"), Category("Appearance")]
public Color LineColor
{
get { return _LineColor; }
set
{
_LineColor = value;
Invalidate();
}
}
[Description("Ancho de la Linea Intermedia"), Category("Appearance")]
public int LineWidth
{
get { return _LineWitdh; }
set
{
_LineWitdh = value;
Invalidate();
}
}
[Description("Obtiene o Establece la Forma de los terminales de la barra de progreso."), Category("Appearance")]
public _ProgressShape ProgressShape
{
get { return ProgressShapeVal; }
set
{
ProgressShapeVal = value;
Invalidate();
}
}
[Description("Obtiene o Establece el Modo como se muestra el Texto dentro de la barra de Progreso."), Category("Behavior")]
public _TextMode TextMode
{
get { return ProgressTextMode; }
set
{
ProgressTextMode = value;
Invalidate();
}
}
[Description("Obtiene el Texto que se muestra dentro del Control"), Category("Behavior")]
public override string Text { get; set; }
#endregion
#region EventArgs
protected override void OnResize(EventArgs e)
{
base.OnResize(e);
SetStandardSize();
}
protected override void OnSizeChanged(EventArgs e)
{
base.OnSizeChanged(e);
SetStandardSize();
}
protected override void OnPaintBackground(PaintEventArgs p)
{
base.OnPaintBackground(p);
}
#endregion
#region Methods
private void SetStandardSize()
{
int _Size = Math.Max(Width, Height);
Size = new Size(_Size, _Size);
}
public void Increment(int Val)
{
this._Value += Val;
Invalidate();
}
public void Decrement(int Val)
{
this._Value -= Val;
Invalidate();
}
#endregion
#region Events
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
using (Bitmap bitmap = new Bitmap(this.Width, this.Height))
{
using (Graphics graphics = Graphics.FromImage(bitmap))
{
graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBilinear;
graphics.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
graphics.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
//graphics.Clear(Color.Transparent); //<-- this.BackColor, SystemColors.Control, Color.Transparent
PaintTransparentBackground(this, e);
//Dibuja el circulo blanco interior:
using (Brush mBackColor = new SolidBrush(this.BackColor))
{
graphics.FillEllipse(mBackColor,
18, 18,
(this.Width - 0x30) + 12,
(this.Height - 0x30) + 12);
}
// Dibuja la delgada Linea gris del medio:
using (Pen pen2 = new Pen(LineColor, this.LineWidth))
{
graphics.DrawEllipse(pen2,
18, 18,
(this.Width - 0x30) + 12,
(this.Height - 0x30) + 12);
}
//Dibuja la Barra de Progreso
using (LinearGradientBrush brush = new LinearGradientBrush(this.ClientRectangle,
this._ProgressColor1, this._ProgressColor2, this.GradientMode))
{
using (Pen pen = new Pen(brush, this.BarWidth))
{
switch (this.ProgressShapeVal)
{
case _ProgressShape.Round:
pen.StartCap = LineCap.Round;
pen.EndCap = LineCap.Round;
break;
case _ProgressShape.Flat:
pen.StartCap = LineCap.Flat;
pen.EndCap = LineCap.Flat;
break;
}
//Aqui se dibuja realmente la Barra de Progreso
graphics.DrawArc(pen,
0x12, 0x12,
(this.Width - 0x23) - 2,
(this.Height - 0x23) - 2,
-90,
(int)Math.Round((double)((360.0 / ((double)this._Maximum)) * this._Value)));
}
}
#region Dibuja el Texto de Progreso
string percentageText = Convert.ToString(Convert.ToInt32((100 / _Maximum) * _Value)) + "%";
using (Brush FontColor = new SolidBrush(this.ForeColor))
{
SizeF MS = graphics.MeasureString(percentageText, this.Font);
SolidBrush shadowBrush = new SolidBrush(Color.FromArgb(100, this.ForeColor));
// Sombra del Texto:
graphics.DrawString(percentageText, this.Font, shadowBrush,
Convert.ToInt32(Width / 2 - MS.Width / 2) + 2,
Convert.ToInt32(Height / 2 - MS.Height / 2) + 2
);
// Texto del Control:
graphics.DrawString(percentageText, this.Font, FontColor,
Convert.ToInt32(Width / 2 - MS.Width / 2),
Convert.ToInt32(Height / 2 - MS.Height / 2));
}
#endregion
//Aqui se Dibuja todo el Control:
e.Graphics.DrawImage(bitmap, 0, 0);
graphics.Dispose();
bitmap.Dispose();
}
}
}
private static void PaintTransparentBackground(Control c, PaintEventArgs e)
{
if (c.Parent == null || !Application.RenderWithVisualStyles)
return;
ButtonRenderer.DrawParentBackground(e.Graphics, c.ClientRectangle, c);
}
/// <summary>Dibuja un Circulo Relleno de Color con los Bordes perfectos.</summary>
/// <param name="g">'Canvas' del Objeto donde se va a dibujar</param>
/// <param name="brush">Color y estilo del relleno</param>
/// <param name="centerX">Centro del Circulo, en el eje X</param>
/// <param name="centerY">Centro del Circulo, en el eje Y</param>
/// <param name="radius">Radio del Circulo</param>
private void FillCircle(Graphics g, Brush brush, float centerX, float centerY, float radius)
{
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBilinear;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
using (System.Drawing.Drawing2D.GraphicsPath gp = new System.Drawing.Drawing2D.GraphicsPath())
{
g.FillEllipse(brush, centerX - radius, centerY - radius,
radius + radius, radius + radius);
}
}
#endregion
}
}
将其另存为 CircularProgressBar.cs。然后重建解决方案。然后从工具箱将其拖到您的表单中。和表单设置如下...使用
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;
using System.Threading;
using Timer = System.Windows.Forms.Timer;
namespace your namespace
{
public partial class Form44 : Form
{
private int progressValue = 0;
public Form44()
{
InitializeComponent();
}
private void Form44_Load(object sender, EventArgs e)
{
// Start a new thread to update the progress bar
Thread progressThread = new Thread(new ThreadStart(UpdateProgressBar));
progressThread.Start();
}
private void UpdateProgressBar()
{
while (progressValue <= 100)
{
// Update the progress bar value
this.Invoke((MethodInvoker)delegate
{
circularProgressBar1.Value = progressValue;
});
// Simulate a slower progress
Thread.Sleep(500);
// Increase the progress value
progressValue++;
}
}
private void Form44_FormClosing(object sender, FormClosingEventArgs e)
{
// Ensure that the thread is terminated when the form is closed
Environment.Exit(0);
}
}
}
您将获得带有 % 的完美圆形条。您也可以从属性更改圆的宽度
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