Tạo biểu đồ xem dung lượng ổ cứng

Bài viết này hướng dẫn bạn cách tạo ra một ứng dụng biểu đồ dùng để hiện thị dung lượng của các ổ cứng như thế nào. Các namespace được sử dụng như sau: using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System...

Bài viết này hướng dẫn bạn cách tạo ra một ứng dụng biểu đồ dùng để hiện thị dung lượng của các ổ cứng như thế nào.

Các namespace được sử dụng như sau:

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1. using System;
2. using System.Drawing;
3. using System.Collections;
4. using System.ComponentModel;
5. using System.IO;
6. using System.Windows.Forms;
7. using System.Data;

using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.IO; using System.Windows.Forms; using System.Data;

Các cấu trúc sử dụng:

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1. struct MyDirTotalSize
2. {
3. public string dirPath;
4. public long totalSize;
5. public int parent;
6. }
7. struct MyAngleStruct
8. {
9. public string folderpath;
10. public float myAngle;
11. public long mySize;
12. }

struct MyDirTotalSize { public string dirPath; public long totalSize; public int parent; } struct MyAngleStruct { public string folderpath; public float myAngle; public long mySize; }

Hàm dưới đây đảm nhiệm việc tạo ra các góc cho mỗi đường dẫn thư mục:

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1. private void GeneratePieChartAngle(string path)
2. {
3. MyAngleStruct angStructObj;
4. angStructObj.myAngle = 0;
5. MyDirTotalSize eff;
6. long opteller = 0, compsize = 0;
7. int startingPoint = -1, startingPoint2;
8. for (startingPoint2 = 0; startingPoint2 <>
9. {
10. eff = (MyDirTotalSize) (SizeDir[startingPoint2]);
11. if (path != eff.dirPath) continue;
12. compsize += eff.totalSize;
13. angStructObj.folderpath = eff.dirPath;
14. angStructObj.mySize = eff.totalSize;
15. AngleS.Add(angStructObj);
16. startingPoint = eff.parent;
17. }
18. foreach (MyDirTotalSize ef in SizeDir)
19. {
20. if (ef.dirPath.CompareTo(path) == 0 || startingPoint <>continue;
21. if (!ef.dirPath.StartsWith(path)) continue;
22. compsize += ef.totalSize;
23. startingPoint2 = ef.parent;
24. opteller += ef.totalSize;
25. if (startingPoint2 > (startingPoint + 1)) continue;
26. angStructObj.folderpath = ef.dirPath;
27. angStructObj.mySize = opteller;
28. AngleS.Add(angStructObj);
29. opteller = 0; //ef.size;
30. }
31. startingPoint = AngleS.Count;
32. for (startingPoint2 = 0; startingPoint2 <>
33. {
34. angStructObj = (MyAngleStruct) (AngleS[startingPoint2]);
35. AngleS.RemoveAt(startingPoint2);
36. angStructObj.myAngle = (angStructObj.mySize/(float) compsize)*360;
37. AngleS.Insert(startingPoint2, angStructObj);
38. }
39. }

private void GeneratePieChartAngle(string path) { MyAngleStruct angStructObj; angStructObj.myAngle = 0; MyDirTotalSize eff; long opteller = 0, compsize = 0; int startingPoint = -1, startingPoint2; for (startingPoint2 = 0; startingPoint2 < eff =" (MyDirTotalSize)" folderpath =" eff.dirPath;" mysize =" eff.totalSize;" startingpoint =" eff.parent;" startingpoint2 =" ef.parent;"> (startingPoint + 1)) continue; angStructObj.folderpath = ef.dirPath; angStructObj.mySize = opteller; AngleS.Add(angStructObj); opteller = 0; //ef.size; } startingPoint = AngleS.Count; for (startingPoint2 = 0; startingPoint2 < angstructobj =" (MyAngleStruct)" myangle =" (angStructObj.mySize/(float)"> <p>Lấy kích thước của thư mục chỉ ra sử dụng hàm sau đây:</p> <div class="dp-highlighter"><div class="bar"><div class="tools"><a href="http://hp-aptech.edu.vn/hpa/programming/archive/2009/01/22/t-o-bi-u-xem-dung-l-ng-c-ng.aspx#" onclick="dp.sh.Toolbar.Command('ViewSource',this);return false;">view plain</a><a href="http://hp-aptech.edu.vn/hpa/programming/archive/2009/01/22/t-o-bi-u-xem-dung-l-ng-c-ng.aspx#" onclick="dp.sh.Toolbar.Command('PrintSource',this);return false;">print</a><a href="http://hp-aptech.edu.vn/hpa/programming/archive/2009/01/22/t-o-bi-u-xem-dung-l-ng-c-ng.aspx#" onclick="dp.sh.Toolbar.Command('About',this);return false;">?</a></div></div><ol class="dp-c" start="1"><li class="alt"><span><span class="keyword">private</span><span> </span><span class="keyword">void</span><span> GetDirveDirTotalSize(</span><span class="keyword">string</span><span> path, </span><span class="keyword">int</span><span> index) </span></span></li><li class=""><span> { </span></li><li class="alt"><span> MyDirTotalSize total1, total2; </span></li><li class=""><span> DirectoryInfo[] dirs; </span></li><li class="alt"><span> DirectoryInfo dir = <span class="keyword">new</span><span> DirectoryInfo(path); </span></span></li><li class=""><span> dirs = dir.GetDirectories(); </span></li><li class="alt"><span> <span class="keyword">foreach</span><span> (DirectoryInfo run </span><span class="keyword">in</span><span> dirs) </span></span></li><li class=""><span> { </span></li><li class="alt"><span> nAantalDirs = index + 1; </span></li><li class=""><span> GetDirveDirTotalSize(run.FullName, nAantalDirs); </span></li><li class="alt"><span> } </span></li><li class=""><span> total1.dirPath = path; </span></li><li class="alt"><span> <span class="keyword">long</span><span> totalFileSizeInFolder=0; </span></span></li><li class=""><span> FileInfo[] files; </span></li><li class="alt"><span> DirectoryInfo file = <span class="keyword">new</span><span> DirectoryInfo(path); </span></span></li><li class=""><span> files=file.GetFiles(); </span></li><li class="alt"><span> <span class="keyword">foreach</span><span>(FileInfo run </span><span class="keyword">in</span><span> files) </span></span></li><li class=""><span> totalFileSizeInFolder+=run.Length; </span></li><li class="alt"><span> total1.totalSize = totalFileSizeInFolder; </span></li><li class=""><span> total1.parent = index; </span></li><li class="alt"><span> SizeDir.Add(total1); </span></li><li class=""><span> total2 = (MyDirTotalSize) SizeDir[(SizeDir.Count - 1)]; </span></li><li class="alt"><span> nAantalDirs = total2.parent; </span></li><li class=""><span> } </span></li></ol></div><textarea style="display: none;" name="code" class="c#"> private void GetDirveDirTotalSize(string path, int index) { MyDirTotalSize total1, total2; DirectoryInfo[] dirs; DirectoryInfo dir = new DirectoryInfo(path); dirs = dir.GetDirectories(); foreach (DirectoryInfo run in dirs) { nAantalDirs = index + 1; GetDirveDirTotalSize(run.FullName, nAantalDirs); } total1.dirPath = path; long totalFileSizeInFolder=0; FileInfo[] files; DirectoryInfo file = new DirectoryInfo(path); files=file.GetFiles(); foreach(FileInfo run in files) totalFileSizeInFolder+=run.Length; total1.totalSize = totalFileSizeInFolder; total1.parent = index; SizeDir.Add(total1); total2 = (MyDirTotalSize) SizeDir[(SizeDir.Count - 1)]; nAantalDirs = total2.parent; }

Vẽ các góc biểu đồ hình tròn từ các vị trí bắt đầu và kết thúc

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1. private void DrawPitotal1romAngles()
2. {
3. float realAngle=0F;
4. Random rnd = new Random();
5. Red=Green=Blue=0;
6. pas.Clear(BackColor);
7. foreach(MyAngleStruct total1 in AngleS)
8. {
9. pas.FillPie(brus,rRect,realAngle,total1.myAngle);realAngle+=total1.myAngle;
10. //Generate random color for drawing
11. int myRed = myGreen = myBlue = Random() % 250;
12. brus.Color = System.Drawing.Color.FromArgb(myRed,myGreen,myBlue);
13. }
14. }

private void DrawPitotal1romAngles() { float realAngle=0F; Random rnd = new Random(); Red=Green=Blue=0; pas.Clear(BackColor); foreach(MyAngleStruct total1 in AngleS) { pas.FillPie(brus,rRect,realAngle,total1.myAngle);realAngle+=total1.myAngle; //Generate random color for drawing int myRed = myGreen = myBlue = Random() % 250; brus.Color = System.Drawing.Color.FromArgb(myRed,myGreen,myBlue); } }

Kết quả thu được như sau: