using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Drawing.Drawing2D;
using?System.Text;
using?System.Windows.Forms;

namespace?BitMapDemo
{
????public?partial?class?Form1?:?Form
????{
????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????}

????????private?bool?flag?=?true;
????????private?void?button1_Click（object?sender?EventArgs?e）
????????{
????????????timer1.Enabled?=?true;
????????}

????????private?void?button2_Click（object?sender?EventArgs?e）
????????{
????????????timer1.Enabled?=?false;
????????}

????????private?void?timer1_Tick（object?sender?EventArgs?e）
????????{
????????????DateTime?t1?=?DateTime.Now;
????????????Graphics?g?=?this.CreateGraphics（）;
????????????LinearGradientBrush?brush;
????????????if?（flag）
????????????{
????????????????brush?=?new?LinearGradientBrush（new?PointF（0.0f?0.0f）
????????????????????new?PointF（700.0f?300.0f）?Color.Red?Color.Blue）;
????????????????flag?=?false;
????????????}
????????????else
????????????{
????????????????brush?=?new?LinearGradientBrush（new?PointF（0.0f?0.0f）
????????????????????new?PointF（700.0f?300.0f）?Color.Blue?Color.Red）;
????????????????flag?=?true;
????????????}
????????????for?（int?j?=?0;?j?????????????{
????????????????for?（int?i?=?0;?i?????????????????{
????????????????????g.FillEllipse（brush?i?*?10?j?*?10?10?10）;
????????????????}
????????????}
????????????DateTime?t2?=?DateTime.Now;
????????????TimeSpan?sp?=?t2?-?t1;
????????????float?per?=?1000?/?sp.Milliseconds;
????????????this.label1.Text?=?“速度：“?+?per.ToString（）?+?“幀/秒“;

????????}

????????private?void?button3_Click（object?sender?EventArgs?e）
????????{
????????????timer2.Enabled?=?true;
????????}

????????private?void?timer2_Tick（object?sender?EventArgs?e）
????????{
????????????DateTime?t1?=?DateTime.Now;
????????????//雙緩沖內存中建圖--從程序到內存，從內存到顯存，顯存到屏幕
????????????Bitmap?bt?=?new?Bitmap（600?600）;
????????????Graphics?g?=?Graphics.FromImage（bt）;
????????????LinearGradientBrush?brush;
????????????if?（flag）
????????????{
????????????????brush?=?new?LinearGradientBrush（new?PointF（0.0f?0.0f）
????????????????????new?PointF（700.0f?300.0f）?Color.Red?Color.Blue）;
????????????????flag?=?false;
????????????}
????????????else
????????????{
????????????????brush?=?new?LinearGradientBrush（new?PointF（0.0f?0.0f）
????????????????????new?PointF（700.0f?300.0f）?Color.Blue?Color.Red）;
????????????????flag?=?true;
????????????}
????????????for?（int?j?=?0;?j?????????????{
????????????????for?（int?i?=?0;?i?????????????????{
????????????????????g.FillEllipse（brush?i?*?10?j?*?10?10?10）;
????????????????????
????????????????}
????????????}
????????????this.CreateGraphics（）.DrawImage（bt?0?0）;
????????????DateTime?t2?=?DateTime.Now;
????????????TimeSpan?sp?=?t2?-?t1;
????????????float

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????3227??2009-02-17?14:41??C#GDI繪圖_BitMapDemo\Backup\BitMapDemo\BitMapDemo.csproj

?????文件???????3277??2009-02-19?16:42??C#GDI繪圖_BitMapDemo\Backup\BitMapDemo\Form1.cs

?????文件???????5088??2009-02-17?15:13??C#GDI繪圖_BitMapDemo\Backup\BitMapDemo\Form1.Designer.cs

?????文件???????6203??2009-02-17?15:13??C#GDI繪圖_BitMapDemo\Backup\BitMapDemo\Form1.resx

?????文件????????469??2009-02-17?14:38??C#GDI繪圖_BitMapDemo\Backup\BitMapDemo\Program.cs

?????文件???????1192??2009-02-17?14:38??C#GDI繪圖_BitMapDemo\Backup\BitMapDemo\Properties\AssemblyInfo.cs

?????文件???????2874??2009-02-17?14:38??C#GDI繪圖_BitMapDemo\Backup\BitMapDemo\Properties\Resources.Designer.cs

?????文件???????5612??2009-02-17?14:38??C#GDI繪圖_BitMapDemo\Backup\BitMapDemo\Properties\Resources.resx

?????文件???????1093??2009-02-17?14:38??C#GDI繪圖_BitMapDemo\Backup\BitMapDemo\Properties\Settings.Designer.cs

?????文件????????249??2009-02-17?14:38??C#GDI繪圖_BitMapDemo\Backup\BitMapDemo\Properties\Settings.settings

?????文件????????919??2009-02-17?14:38??C#GDI繪圖_BitMapDemo\Backup\BitMapDemo.sln

????..A..H.?????16384??2009-07-28?23:09??C#GDI繪圖_BitMapDemo\Backup\BitMapDemo.v12.suo

?????文件??????10752??2019-11-12?13:46??C#GDI繪圖_BitMapDemo\BitMapDemo\bin\Debug\BitMapDemo.exe

?????文件??????30208??2019-11-12?13:46??C#GDI繪圖_BitMapDemo\BitMapDemo\bin\Debug\BitMapDemo.pdb

?????文件??????22704??2019-11-12?13:46??C#GDI繪圖_BitMapDemo\BitMapDemo\bin\Debug\BitMapDemo.vshost.exe

?????文件????????490??2013-03-18?17:00??C#GDI繪圖_BitMapDemo\BitMapDemo\bin\Debug\BitMapDemo.vshost.exe.manifest

?????文件???????3535??2019-11-12?13:45??C#GDI繪圖_BitMapDemo\BitMapDemo\BitMapDemo.csproj

?????文件???????3277??2019-11-12?13:46??C#GDI繪圖_BitMapDemo\BitMapDemo\Form1.cs

?????文件???????5668??2019-11-12?13:46??C#GDI繪圖_BitMapDemo\BitMapDemo\Form1.Designer.cs

?????文件???????6203??2019-11-12?13:46??C#GDI繪圖_BitMapDemo\BitMapDemo\Form1.resx

?????文件????????289??2009-07-28?23:08??C#GDI繪圖_BitMapDemo\BitMapDemo\obj\BitMapDemo.csproj.FileList.txt

?????文件???????1842??2009-02-19?16:06??C#GDI繪圖_BitMapDemo\BitMapDemo\obj\BitMapDemo.csproj.FileListAbsolute.txt

?????文件????????938??2019-11-12?13:46??C#GDI繪圖_BitMapDemo\BitMapDemo\obj\Debug\BitMapDemo.csproj.FileListAbsolute.txt

?????文件????????847??2019-11-12?13:46??C#GDI繪圖_BitMapDemo\BitMapDemo\obj\Debug\BitMapDemo.csproj.GenerateResource.Cache

?????文件???????1341??2019-11-12?13:46??C#GDI繪圖_BitMapDemo\BitMapDemo\obj\Debug\BitMapDemo.csprojResolveAssemblyReference.cache

?????文件??????10752??2019-11-12?13:46??C#GDI繪圖_BitMapDemo\BitMapDemo\obj\Debug\BitMapDemo.exe

?????文件????????180??2019-11-12?13:46??C#GDI繪圖_BitMapDemo\BitMapDemo\obj\Debug\BitMapDemo.Form1.resources

?????文件??????30208??2019-11-12?13:46??C#GDI繪圖_BitMapDemo\BitMapDemo\obj\Debug\BitMapDemo.pdb

?????文件????????180??2019-11-12?13:46??C#GDI繪圖_BitMapDemo\BitMapDemo\obj\Debug\BitMapDemo.Properties.Resources.resources

?????文件????????791??2019-11-12?13:45??C#GDI繪圖_BitMapDemo\BitMapDemo\obj\Debug\DesignTimeResolveAssemblyReferences.cache

............此處省略27個文件信息