C# Note

MessageBox.Show("Import Finished!!", "Process Message", MessageBoxButtons.OK, MessageBoxIcon.Information);













2008.03.26                                 

         *DateTime format convert                  

                                    



using System;

using System.Globalization;



public class MainClass {

public static void Main(string[] args) {

DateTime dt = DateTime.Now;

String[] format = {

"d", "D",

"f", "F",

"g", "G",

"m",

"r",

"s",

"t", "T",

"u", "U",

"y",

"dddd, MMMM dd yyyy",

"ddd, MMM d \"'\"yy",

"dddd, MMMM dd",

"M/yy",

"dd-MM-yy",

};

String date;

for (int i = 0; i < format.Length; i++) {

date = dt.ToString(format[i], DateTimeFormatInfo.InvariantInfo);

Console.WriteLine(String.Concat(format[i], " :" , date));

}



/** Output.

*

* d :08/17/2000

* D :Thursday, August 17, 2000

* f :Thursday, August 17, 2000 16:32

* F :Thursday, August 17, 2000 16:32:32

* g :08/17/2000 16:32

* G :08/17/2000 16:32:32

* m :August 17

* r :Thu, 17 Aug 2000 23:32:32 GMT

* s :2000-08-17T16:32:32

* t :16:32

* T :16:32:32

* u :2000-08-17 23:32:32Z

* U :Thursday, August 17, 2000 23:32:32

* y :August, 2000

* dddd, MMMM dd yyyy :Thursday, August 17 2000

* ddd, MMM d "'"yy :Thu, Aug 17 '00

* dddd, MMMM dd :Thursday, August 17

* M/yy :8/00

* dd-MM-yy :17-08-00

*/

}

}









2008.03.25                                 

      *SMTPResponse:int                        

                                    





private enum SMTPResponse: int

{

CONNECT_SUCCESS = 220,

GENERIC_SUCCESS = 250,

DATA_SUCCESS = 354,

QUIT_SUCCESS = 221

}

















2008.03.21                                 

         *MessageBox 可以使用整理為參數               

                                    





MessageBox.Show(pictureBox1.Image.Width + "\t" + pictureBox1.Image.Height);

      ^^^^^^^^^^^^^^       ^^^^^^^^^^^^^^^

   整數             整數







2008.03.21                                 

         *C# 讀取圖片像數大小                     

                                    









MessageBox.Show(pictureBox1.Image.Width + "\t" + pictureBox1.Image.Height);





   pictureBox1.Image.Width            pictureBox1.Image.Height

^^^                 ^^^^

上下兩句得到的結果一樣。

pictureBox1.Image.PhysicalDimension.Width   pictureBox1.Image.PhysicalDimension.Height

             ^^^                ^^^^







2008.03.21                                 

      *C#產生出Access 的.mdb檔                     

                                    



如何透過使用 ADOX 和 Visual C# . NET 來建立 Access 資料庫

http://support.microsoft.com/kb/317881



程式設計人員時常需要利用程式設計方式來建立資料庫。. 雖然 ActiveX Data Objects (ADO) 或 ADO . NET 都提供方法來建立 Microsoft Access 資料庫， 自動您可以使用 Microsoft Jet OLE DB Provider 與 Microsoft ADO Ext . 2.7 透過 COM Interop 層以手動方式建立資料庫為 DDL 和安全性 (ADOX)。







會使用到的DLL C:\Program Files\Common Files\System\ado＼msadox.dll











ADOX.CatalogClass cat = new ADOX.CatalogClass();



cat.Create("Provider=Microsoft.Jet.OLEDB.4.0;" +

"Data Source=D:\\\\AccessDB\\\\NewMDB.mdb;" +

"Jet OLEDB:Engine Type=5");



Console.WriteLine("Database Created Successfully");

cat = null;















2008.03.12                                 

      *XML的實際應用                         

                                    



XmlDocument doc = new XmlDocument();

doc.Load("Config.xml");

XmlNode RootNode = doc.SelectSingleNode("Config");

XmlNode CatalogNode = RootNode.SelectSingleNode("Catalog");

CatalogNode = CatalogNode.NextSibling;

MessageBox.Show(CatalogNode.InnerText);

XmlNamespaceManager xnmgr = new XmlNamespaceManager(doc.NameTable);

xnmgr.AddNamespace("Name", "");

XmlNodeList NodeList = CatalogNode.SelectNodes("Item/@Name", xnmgr);



if (NodeList.Count == 0) { MessageBox.Show("Node's count is small than 0"); }

for (int i = 0; i < NodeList.Count; i++)

{

MessageBox.Show(NodeList[i].Value);



}



doc.Save("Config.xml");











2008.03.09                                 

      *SplashScreen.cs                        

                                    



using (Font font = new Font("Sans Serif", 4))

{

   using (Graphics g = Graphics.FromImage(bitmap))

   {

      g.DrawString(versionText, font, Brushes.Black, 100, 142);

   }

}





2008.03.09                                 

      *Sharp Develop Splash Screen form setting            

                                    

using System.Reflection;



[assembly: System.Runtime.InteropServices.ComVisible(false)]

[assembly: AssemblyCompany("ic#code")]

[assembly: AssemblyProduct("SharpDevelop")]

[assembly: AssemblyCopyright("2000-2007 AlphaSierraPapa")]

[assembly: AssemblyVersion(RevisionClass.FullVersion)]









2008.03.08                                 

      *XML的規則                            

                                    



上面是XML檔的內容，其中bka為prefix；urn:samples為namespace。(在urn:samples裡，有一個bka為prefix的字串)







C# 的程式碼：

AddNamespace("bka", "urn:samples")            使用參數加入規則。   

SelectNodes("/bookstore/book/@bka:ISBN", nsmgr);   選擇Node的path。　   







XmlDocument doc = new XmlDocument();

doc.Load("booksort.xml");



//Create an XmlNamespaceManager for resolving namespaces.

XmlNamespaceManager nsmgr = new XmlNamespaceManager(doc.NameTable);

nsmgr.AddNamespace("bka", "urn:samples");



//Select and display the value of all the ISBN attributes.

XmlNodeList nodeList;

XmlElement root = doc.DocumentElement;

nodeList = root.SelectNodes("/bookstore/book/@bka:ISBN", nsmgr);

foreach (XmlNode isbn in nodeList)

{

   MessageBox.Show(isbn.Value);

}















Jane

Austen















2008.03.07                                 

         *Detect OS Platform                     

                                    



if (Environment.OSVersion.Platform == PlatformID.WinCE)







2008.03.06                                 

      *為Control  加上Event                        

                                    



// Declare delegate for submit button clicked.

// Most action events (like the Click event) in Windows Forms

// use the EventHandler delegate and the EventArgs arguments.

// We will define our own delegate that does not specify parameters.

// Mostly, we really don't care what the conditions of the

// click event for the Submit button were, we just care that

// the Submit button was clicked.

public delegate void SubmitClickedHandler();







// Declare the event, which is associated with our

// delegate SubmitClickedHandler(). Add some attributes

// for the Visual C# control property.

[Category("Action")]

[Description("Fires when the Submit button is clicked.")]

public event SubmitClickedHandler SubmitClicked; ----------------> //Type is public delegate void SubmitClickedHandler();







// calling the event.

private void btnSubmit_Click(object sender, System.EventArgs e)

{

   if (txtName.Text.Length == 0)

   {

      MessageBox.Show("Please enter your name.");

   }

   else

   {

      OnSubmitClicked();--------------------------------->   //Call public event SubmitClickedHandler SubmitClicked;

   }

}





protected virtual void OnSubmitClicked()

{

   // If an event has no subscribers registerd, it will

   // evaluate to null. The test checks that the value is not

   // null, ensuring that there are subsribers before

   // calling the event itself.

   if (SubmitClicked != null)

   {

      SubmitClicked(); // Notify Subscribers

   }

}



















               2008.03.06                  

      *Control 的Category                         

                                    



Category("Progress control"),

Description("The progress control style"),







                                    

* Convert hex string value to integer                      

                                    



Convert.ToString(Convert.ToByte(tb_16Value.Text, 16), 2));         









                                    

* Detect the length of string and append "0" for you string.             

                                    



private string AppendZero(string _str)

{

   int addCount = 8 - _str.Length;

   if (addCount != 0)

   {

      for (int i = 0; i < addCount; i++)

      {

         _str = _str.Insert(0, "0");

      }

   }

   return _str;

}









                                    

*    別人的求時間差方法                            

                                    



startTime = DateTime.Now;

stopTime = DateTime.Now;



elapsedTime = stopTime.Subtract(startTime);

elapsedMilliseconds = (int)elapsedTime.TotalMilliseconds;









                                    

*    List                                  

                                    



List m_VoltagePanelList;

List m_VoltageTitleLabelList;





                                    

*    Error MessageBox                            

                                    



MessageBox.Show(Exp.InnerException + "\r\n\r\n" + Exp.Message + "\r\n\r\n" + Exp.Source + "\r\n\r\n" + Exp.StackTrace + "\r\n\r\n" + Exp.TargetSite);













                                    

*    隱藏Main Form                            

                                    



private void Form1_Load(object sender, EventArgs e)

{

   this.Hide();

this.ShowInTaskbar = false;

}











                                    

            [ ERROR MESSAGE ]                  

*    must declare a body because it is not marked abstract or extern       

                                    



C# abstract class cant obtain virtual method without body!!!











                                    

            *使用系統顏色　System Color               

                                    

Namespace: System.Drawing

Assembly: System.Drawing (in system.drawing.dll)



// Get all the values from the KnownColor enumeration.

KnownColor.Control











                                    

            *Pass by reference in C#               

                                    



private unsafe void button1_Click(object sender, EventArgs e)

{

int a = 100;

ABC(ref a);

textBox1.Text = a.ToString();

}

private unsafe void ABC(ref int abc)

{

abc = 5;

}







                                    

         *Pass by reference though Fixed                

                                    



[DllImport("Susi.dll")]

unsafe static extern bool SusiCoreAccessBootCounter(UInt32 mode, UInt32 OPFlag, bool* enable, UInt32* value);



static unsafe public bool SusiCoreAccessBootCounter_(UInt32 mode, UInt32 OPFlag, ref bool enable, ref UInt32 value)

{

bool[] enable1 = new bool[1];

uint[] value1 = new uint[1];



enable1[0]=enable;

value1[0] = value;



bool RTN_Value;



fixed (bool* pBool = enable1)

{

fixed (uint* pValue = value1)

{

RTN_Value= SusiCoreAccessBootCounter(mode, OPFlag, pBool, pValue);

}

}



enable = enable1[0];

value = value1[0];



return RTN_Value;

}











                                    

         *Pass by reference though Fixed                

                                    



[System.Runtime.InteropServices.DllImport("Kernel32")]

static extern unsafe bool GetComputerName(byte* lpBuffer,long* nSize);



static void Main()

{

   byte[] buffor = new byte[512];

   long size = buffor.Length;

   unsafe

   {

      long* pSize = &size;         

      fixed (byte* pBuffor = buffor)      

   {



   GetComputerName(pBuffor,pSize);         

}







2008.03.26                                 

         *得到執行檔目前路徑                     

                                    



int IndexStart = System.Reflection.Assembly.GetExecutingAssembly().Location.LastIndexOf("\\");



Properties.Settings.Default.g_RootPath =

System.Reflection.Assembly.GetExecutingAssembly().Location.Substring(0, IndexStart);







                                    

      *Get execute file's path(取得目前執行檔所在的路徑)             

                                    



Solved

int IndexStart = System.Reflection.Assembly.GetExecutingAssembly().Location.LastIndexOf("\\");

Properties.Settings.Default.g_RootPath = System.Reflection.Assembly.GetExecutingAssembly().Location.Substring(0, IndexStart);



Waitting for Solving

Environment.CurrentDirectory