ewdna.com

codingjames.blogspot.com

Coding James: 四月 2010

http://codingjames.blogspot.com/2010_04_01_archive.html

不過可以使用.net Form的方法做到，先加入參考System.Drawing. New a bitmap with screen width and height. Bitmap b = new Bitmap(. Copy screen through .net form api. Using (Graphics g = Graphics.FromImage(b). GCopyFromScreen(0, 0, 0, 0,. BSize, CopyPixelOperation.SourceCopy);. Void SaveBitmap(Bitmap b, string f). Static extern bool DeleteObject(IntPtr hObject);. Private static BitmapSource ToBitmapSource(Bitmap b). Transform to hbitmap image. IntPtr hb = b.GetHbitmap();. Convert hbitmap to bitmap source. Bitmap b = new Bitmap(.

codingjames.blogspot.com

Coding James: 三月 2010

http://codingjames.blogspot.com/2010_03_01_archive.html

要在Management程式(.net程式)中使用舊有的Unmanagement函式，例如User32裡面的API，需要使用DllImport來做轉換，最單純的用法就像在 在WPF中取得螢幕的解析度. Static extern int GetSystemMetrics(int nIndex);. 簡單的形態轉換可以參考 Managed and Un-Managed Code in .NET. Static extern int gsm(int nIndex);. Static bool BoolFunction();. 請以 MarshalAs 標記布林 P/Invoke 引數. Managed and Un-Managed Code in .NET. Private void SetViewBox(ImageBrush ib, Rect r). IbViewboxUnits = BrushMappingMode.Absolute;. IbViewbox = r;. 例如(0,0,0.5,0.5)就是左上角的四分之一張圖. Y alias is reverse from Cartesian plane.

codingjamesinenglish.blogspot.com

Coding James.English: Drawing in WPF

http://codingjamesinenglish.blogspot.com/2011/07/drawing-in-wpf.html

There are always some problems in coding. Let's share the answers. Wednesday, July 27, 2011. The concept of drawing in WPF is quite different with that in .net form. There is no Graphics object to handle the drawing process, you need to new Shape objects (Line, Ellipse, Rectangle, .) into a Canvas as follow,. 1 New a Canvas. Canvas Margin="0,0,0,0" Name="c"/. Or in C# source file. Canvas c = new Canvas();. ThisContent = c;. 2 New Shape objects and put them into Canvas. New a line geometry. PData = l;.

codingjames.blogspot.com

Coding James: 二月 2010

http://codingjames.blogspot.com/2010_02_01_archive.html

請參考 Writing High-DPI Win32 Applications - DPI Virtualization. Use Windows XP Style DPI Scaling. HKEY CURRENT USER Software Microsoft Windows DWM]. Open the key of Desktop Window Manager. RegistryKey k = Registry.CurrentUser.OpenSubKey(. Software Microsoft Windows DWM");. Get the value if it exists. If ( int)k.GetValue("UseDpiScaling", 0) = 1). Writing High-DPI Win32 Applications. Current Word - 「XP Style DPI Scaling」. API to get "Use Windows XP Style DPI Scaling" setting. Out double DpiX, out double DpiY).

codingjames.blogspot.com

Coding James: 一月 2012

http://codingjames.blogspot.com/2012_01_01_archive.html

C: Documents and Settings Administrator diskpart. Microsoft DiskPart version 5.2.3790.3959. Volume # # Ltr Label Fs Type Size Status Info. Volume 0 C NTFS Partition 15 GB Healthy System. Volume 1 D CD-ROM 0 B Healthy. Volume 2 E New Volume NTFS Partition 20 GB Healthy. DISKPART select volume 2. Volume 2 is the selected volume. DiskPart successfully extended the volume. Volume # # Ltr Label Fs Type Size Status Info. Volume 0 C NTFS Partition 15 GB Healthy System. Volume 1 D CD-ROM 0 B Healthy.

codingjamesinenglish.blogspot.com

Coding James.English: Use RSA in C#

http://codingjamesinenglish.blogspot.com/2012/04/use-rsa-in-c.html

There are always some problems in coding. Let's share the answers. Wednesday, April 4, 2012. Use RSA in C#. RSA is one of the asymmetric encryption algorithm. There are two keys, public and private, in this algorithm. Detail is reference to RSA. In general, the public key is saved as a .crt file and the private key is saved as a .pfx file with password. To use these two keys, you need to load them by an X509Certificate2 object. Using System.Security.Cryptography.X509Certificates;. You can use either padd...

codingjames.blogspot.com

Coding James: 在C#中讀取Excel的試算表名稱

http://codingjames.blogspot.com/2010/12/cexcel.html

SheetNameList = new List. Load excel file as an ole database. Provider = Microsoft.Jet.OLEDB.4.0;". Data Source = {0};". Extended Properties='Excel 8.0;HDR=No'",. Load excel sheet as DataRow. ExcelDatabase.GetSchema("Tables").Select();. Foreach (DataRow sheet in sheetList). Query each sheet name from excel file. Sheet["TABLE NAME"] as string);. Close and release database connection. 如何取得 Excel 中的 Sheet Name. 訂閱： 張貼留言 (Atom). Asterisk : The Cookbook 食譜 035 - a2billing. Caton OO Google =? Use RSA in C#.

codingjames.blogspot.com

Coding James: 七月 2010

http://codingjames.blogspot.com/2010_07_01_archive.html

可以參考 如何使用 Windiff.exe 公用程式. 4 開啟WinDiff，從表單中選取File- CompareFiles. 6 如果不同，會顯示紅字，雙擊紅字就會展開整份檔案. 如何使用 Windiff.exe 公用程式. 訂閱： 文章 (Atom). Asterisk : The Cookbook 食譜 035 - a2billing. STouch Board is now available on Google Play! Caton OO Google =? Create to Creat be Great. Use RSA in C#. CCLEERIC - Share Your Knowledge! Creating Game On Xbox 360, Windows, and Zune.

codingjames.blogspot.com

Coding James: 在C#中使用SQLite資料庫

http://codingjames.blogspot.com/2010/12/csqlite.html

可以去 System.Data.SQLite. String path = "Test.db";. String password = "Password";. For non-exist database, create it. Connection = new SQLiteConnection(. Data Source = " path);. For exist database, connect it. Connection = new SQLiteConnection(. Data Source = " path);. SQLiteConnection connection, string commandText). Command.CommandText = commandText;. SQLiteConnection connection, string commandText). List string result = new List string ();. Command.CommandText = commandText;. Read one row one time.

codingjamesinenglish.blogspot.com

Coding James.English: Problem of saving images in WPF (RenderTargetBitmap)

http://codingjamesinenglish.blogspot.com/2011/07/problem-of-saving-images-in-wpf.html

There are always some problems in coding. Let's share the answers. Thursday, July 28, 2011. Problem of saving images in WPF (RenderTargetBitmap). To save a visual to an image file need to use RenderTargetBitmap, detail is reference to Save and read images in WPF. There are three ways to fix the problem,. Simple, but the visual logical tree is changed. Maintain the original visaul logical tree, but need to do more process. Temporary change the reative postion by Measure() and Arrange(). New a RenderTarget...