c# 自定义进度条控件

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Threading;

namespace WindowsFormsApplication19
{
    public partial class CustomControl1 : Control
    {
        Bitmap background;
        //进度条的最大值，最小值，和当前值
        private int min_value = 0;
        private int max_value = 100;
        private int current_value;
        private int min_value_protect_value = 0;//用户保护max和min变量只赋值一次的值
        private int max_value_protect_value = 0;//

        //控件的最小吃寸
        private int min_size;
        //三个颜色，最外层，中间层和最内填充层
        private Color edge_line_color = Color.F

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件        187  2016-02-01 20:13  圆形进度条\WindowsFormsApplication19\App.config

     文件      23552  2016-02-02 17:21  圆形进度条\WindowsFormsApplication19\bin\Debug\WindowsFormsApplication19.exe

     文件        187  2016-02-01 20:13  圆形进度条\WindowsFormsApplication19\bin\Debug\WindowsFormsApplication19.exe.config

     文件      36352  2016-02-02 17:21  圆形进度条\WindowsFormsApplication19\bin\Debug\WindowsFormsApplication19.pdb

     文件      24224  2016-02-02 16:52  圆形进度条\WindowsFormsApplication19\bin\Debug\WindowsFormsApplication19.vshost.exe

     文件        187  2016-02-01 20:13  圆形进度条\WindowsFormsApplication19\bin\Debug\WindowsFormsApplication19.vshost.exe.config

     文件        490  2015-07-10 19:01  圆形进度条\WindowsFormsApplication19\bin\Debug\WindowsFormsApplication19.vshost.exe.manifest

     文件       9650  2016-02-02 17:20  圆形进度条\WindowsFormsApplication19\circular_progressbar.cs

     文件       1060  2016-02-02 16:53  圆形进度条\WindowsFormsApplication19\CustomControl1.Designer.cs

     文件       1652  2016-02-02 17:21  圆形进度条\WindowsFormsApplication19\Form1.cs

     文件       4099  2016-02-02 17:21  圆形进度条\WindowsFormsApplication19\Form1.Designer.cs

     文件      19164  2016-02-02 17:21  圆形进度条\WindowsFormsApplication19\Form1.resx

     文件      10449  2016-02-02 17:21  圆形进度条\WindowsFormsApplication19\obj\Debug\DesignTimeResolveAssemblyReferences.cache

     文件       7015  2016-02-02 16:53  圆形进度条\WindowsFormsApplication19\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件          0  2016-02-01 20:13  圆形进度条\WindowsFormsApplication19\obj\Debug\TemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs

     文件          0  2016-02-01 20:13  圆形进度条\WindowsFormsApplication19\obj\Debug\TemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs

     文件          0  2016-02-01 20:13  圆形进度条\WindowsFormsApplication19\obj\Debug\TemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs

     文件       2641  2016-02-02 17:16  圆形进度条\WindowsFormsApplication19\obj\Debug\WindowsFormsApplication19.csproj.FileListAbsolute.txt

     文件        977  2016-02-02 17:21  圆形进度条\WindowsFormsApplication19\obj\Debug\WindowsFormsApplication19.csproj.GenerateResource.Cache

     文件       2211  2016-02-01 20:27  圆形进度条\WindowsFormsApplication19\obj\Debug\WindowsFormsApplication19.csprojResolveAssemblyReference.cache

     文件      23552  2016-02-02 17:21  圆形进度条\WindowsFormsApplication19\obj\Debug\WindowsFormsApplication19.exe

     文件       9062  2016-02-02 17:21  圆形进度条\WindowsFormsApplication19\obj\Debug\WindowsFormsApplication19.Form1.resources

     文件      36352  2016-02-02 17:21  圆形进度条\WindowsFormsApplication19\obj\Debug\WindowsFormsApplication19.pdb

     文件        180  2016-02-02 16:53  圆形进度条\WindowsFormsApplication19\obj\Debug\WindowsFormsApplication19.Properties.Resources.resources

     文件        537  2016-02-01 20:13  圆形进度条\WindowsFormsApplication19\Program.cs

     文件       1374  2016-02-01 20:13  圆形进度条\WindowsFormsApplication19\Properties\AssemblyInfo.cs

     文件       2902  2016-02-01 20:13  圆形进度条\WindowsFormsApplication19\Properties\Resources.Designer.cs

     文件       5612  2016-02-01 20:13  圆形进度条\WindowsFormsApplication19\Properties\Resources.resx

     文件       1112  2016-02-01 20:13  圆形进度条\WindowsFormsApplication19\Properties\Settings.Designer.cs

     文件        249  2016-02-01 20:13  圆形进度条\WindowsFormsApplication19\Properties\Settings.settings

............此处省略15个文件信息