c sharp programming examples for beginners

... C: \WINDOWS\Microsoft.NET\Framework\v2.0.50727\csc.exe hello.cs • For Mono run mcs hello.cs. • For users of cscc, compile with "cscc -o <name>.exe <name>.cs". Doing so will produce ... generic type declaration. Like fields, methods can be static (associated with and accessed through the class) or instance (associated with and accessed through an object instance of the class). Constructors A ... needs. C Introduction Although C# is derived from the C programming language, it has features such as garbage collection that allow beginners to become proficient in C# more quickly than in C or C+ +....

Ngày tải lên: 31/03/2014, 16:41

... system IO for file operations namespace Calculator { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, ... !! A0!'.901!RpublicT!70$#,0!108%-,)/2!'(0!$+/8')#/!*#!&0!8-/!+*0!)'!#+'*)10!'()*!8%-**N! S#&=!2#!7-8;!'#!RU#,3]N8*T!-/1!108%-,0!'(0!8%-**!,)2('!#/!'#9!#$!'(0!Main!$+/8')#/4! Calculator Calc = new Calculator();! ! 16" VISUAL" ;C# " ;PROGRAMMING& quot;BASICS# ! //This is the switch-case command //it works like multiple if's switch (String) ... void checkBox1_CheckedChanged(object sender, EventArgs e) { if (checkBox1.Checked == true) { button1.Enabled = true; } else 4" VISUAL" ;C# " ;PROGRAMMING& quot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

Ngày tải lên: 28/04/2014, 15:33

... below, one for C (Compilers .C) and another for C# (Compilers.Csharp), can own (and access) different classes with the same name. Therefore, Lexer and Parser for the C compiler are accessed without ... are associated with the namespaces Compilers .C and Compilers.Csharp, respectively: namespace Compilers .C { class Lexer { } class Parser { } } namespace Compilers.Csharp { class Lexer { } class ... System.Collections; // To access ArrayList class. 2 3 namespace Co { 4 namespace System { 5 namespace Collections { 6 public class OurList { /* */ } 7 // 8} 9} 10 namespace Project { 11 public class...

Ngày tải lên: 20/08/2012, 11:57

... source code to execute on a particular machine… • compilation into machine-language object code • direct execution of source code by ‘interpreter’ program • compilation into intermediate object ... automatically at the end of every month) and could discipline any doctor guilty of misconduct – of course this would be true for other sta as well. More specically a manager could check that a doctor’s ... o. A car has a current speed and has a certain amount of fuel inside it. Speci c behaviour can also be associated with each object (things that you can do with it) :- a watch can be checked...

Ngày tải lên: 21/02/2014, 06:20

... from an Access database. Listing 1.2: OLEDBCONNECTIONACCESS.CS /* OleDbConnectionAccess.cs illustrates how to use an OleDbConnection object to connect to an Access database 24 Mastering C# Database ... the constructor OleDbConnection myOleDbConnection = new OleDbConnection(connectionString); // create an OleDbCommand object OleDbCommand myOleDbCommand = myOleDbConnection. CreateCommand(); ... source=ORCL;user id=SCOTT; password=TIGER"; // create an OleDbConnection object to connect to the // database, passing the connection string to the constructor OleDbConnection myOleDbConnection...

Ngày tải lên: 14/03/2014, 17:40

... namespace has been imported, the following example creates an OleDbConnection object, passing connectionString to the constructor: OleDbConnection myOleDbConnection = new OleDbConnection(connectionString); Listing ... source=ORCL;user id=SCOTT;password=TIGER"; // create an OleDbConnection object to connect to the // database, passing the connection string to the constructor OleDbConnection myOleDbConnection ... OleDbConnection(connectionString); // create an OleDbCommand object OleDbCommand myOleDbCommand = myOleDbConnection.CreateCommand(); // set the CommandText property of the OleDbCommand object to...

Ngày tải lên: 14/03/2014, 20:20

... subtraction or even a while loop. No, no, no. I wanted recursion. Name: CCC .C #include <stdio.h> int string_count(char *s) { int count = 1; if(*s++) count += string_count(s); else count ... since it’s black-on-black, you can’t see it. (A black foreground is used primarily with a colored background.) Rather than have you re-edit the BLUE .C source code to try all of the color ... source code into your editor, or Shift+click this link to download the source code. This is a subtle modification of the original DOSVER .C program (which you can download if you Shift+Click...

Ngày tải lên: 25/03/2014, 15:19

... and group for which access is to be checked. With the process’s privileges lowered, perform the access check, then restore privi- leges to what they were before the check. See Recipe 1.3 for additional ... be careful to avoid the types of race conditions known as Time of Check, Time of Use (TOCTOU), which are illus- trated in Figures 2-1 and 2-2. These race conditions occur when access is checked before ... from access( ) indicates that access will be granted. The problem is that between the time the access check via access( ) completes and the time open( ) begins (both system calls are atomic within...

Ngày tải lên: 30/03/2014, 03:20

... listenerSocket.Bind(ipepServer) listenerSocket.Listen(-1) clientSocket = listenerSocket.Accept() If clientSocket.Connected Then Do bytesReceived = clientSocket.Receive(recv) tbStatus.Text += Encoding.ASCII.GetString(recv) ... the call to AcceptSocket. Execution will not continue until an incoming connection has been detected; when it has, a new socket is created and dedicated to handling this particular client. Once 2.2 ... EndPoint. AcceptSocket() Accepts a pending connection request. Returns Socket. AcceptTcpClient() Accepts a pending connection request. Returns TcpClient. Pending() Determines if there are pending connection requests....

Ngày tải lên: 17/04/2014, 09:17

... Console.WriteLine("Không thu c tất c c c trường hợp trên"); break; } C u tr c vòng lặp trong lập trình C# C# cung c p c c cấu tr c vòng lặp chương trình  While  Do… while  For  Foreach Sau ... trong C# , c ch khai báo biến, mảng trong C#  C u tr c điều kiện, lựa chọn if … else và switch… case  C u tr c vòng lặp while, do…while, for, foreach Bài tập tự th c hiện Để c ng c kiến ... { return cmd.ExecuteReader(); } else { using (OleDbConnection conn = GetConnection()) { cmd.Connection = conn; datareader = cmd.ExecuteReader(); return cmd.ExecuteReader();...

Ngày tải lên: 27/06/2014, 03:20

... this; pb.Dock = DockStyle.Fill; pb.BackColor = Color.Black; //create graphics device surface = new Bitmap(this.Size.Width, this.Size.Height); pb.Image = surface; device = Graphics.FromImage(surface); //make ... Dungeon chapters), and the player can choose from several character classes. Good non- player characters (NPCs) also help the player to successfully complete the game’s primary quest chain and sub-quests. ... your own character classes using the character editor in Chapter 10, “Creating Characters and Monsters.” Figure 1.7 Diablo III . Courtesy of Blizzard Entertainment. 18 Chapter 1 n Welcome to the...

Ngày tải lên: 27/06/2014, 08:20

... the device context (HDC), which is used by GDI to send information to the device. In GDI+, the concept of device context and handle to the device context is replaced by the Graphics object. The ... the application needs to call the SelectObject function, which takes the device context and pen handle as arguments. Now the application can draw any graphics object. The application calls the ... 2D Vector Graphics Programming Vector graphics concerns the drawing of shapes that can be specified by sets of points on a coordinate system. Such shapes are called primitives; examples include...

Ngày tải lên: 12/08/2014, 19:20

... menu click event handler. The Form class provides the CreateGraphics method, which returns a Graphics object. The following code snippet creates a Graphics object using the CreateGraphics method ... background color of the surface as the background color of the form. Caution When you create a Graphics object using the CreateGraphics method, you must dispose of that object explicitly by calling ... was clicked. Now we check to see if the Rectangle check box is checked. If so, we draw a rectangle to mark the connecting point of the two lines. If not, we draw an ellipse as the connecting...

Ngày tải lên: 12/08/2014, 19:20

Ngày tải lên: 12/08/2014, 19:20

Ngày tải lên: 12/08/2014, 19:20

Ngày tải lên: 12/08/2014, 19:20

Ngày tải lên: 12/08/2014, 19:20

Ngày tải lên: 12/08/2014, 19:20