c sharp programming examples

... block of code that may throw an exception that is to be caught and handled Following the try block are one or more catch blocks These blocks contain the exception handling logic Each catch block ... detected by application code Code that detects an error condition is said to throw an exception and code that handles the error is said to catch the exception An exception in C# is an object ... accessible here. Comments allow inline documentation of source code The C# compiler ignores comments Three styles of comments are allowed in C#: Single-line comments The "//" character

Ngày tải lên: 31/03/2014, 16:41

... executed)
when
that
event
occurs.
 
As
you
can
see,
when
we
Click
the
button,
the
button1_Click
function
is
executed.
That
function
has
been
 automatically
written
for
you
when
you
double‐click
the
button.
Of
course,
the
same
function
can
be
 ... open
the
form
named
“Form1.cs”
(“.cs”
is
from
C
Sharp).
In
case
you
did
not
know,
in
C#
the
code
is
 usually
put
between
curly
braces
just
like
in
Java
and
C++.
 we
click
the
button.
Inside
it,
we
will
write
the
code
that
will
add
the
two
values
from
the
text
boxes.
 ... On
the
right
you
have
your
“Solution
Explorer”.
When
you
create
a
new
project,
you
automatically
create
a
 new
solution.
A
solution
is
a
collection
of
multiple
projects,
let’s
say
we
make
an
application
called
 “Calculator”
(cause
this
is
what
we
actually
do),
and
“Calculator”
is
an
application
project
inside
the


Ngày tải lên: 28/04/2014, 15:33

... |Index C sharp musical note Trang 27C# Programming Cover|Introduction|Basics|Classes|The NET Framework|Advanced Topics| C sharp musical note Trang 28C# Programming Cover|Introduction|Basics|Classes|The ... Documentation License 219 Trang 12C Sharp Programming|Introduction|Basics|Classes|The NET Framework|Advanced Topics|Index C sharp musical note C#(pronounced "See Sharp") is a multi-purpose computerprogramming ... generics, partial classes, and iterators [1][2] Trang 30C# Programming Cover|Introduction|Basics|Classes|The NET Framework|Advanced Topics|Index C sharp musical note To compile your first C# application,

Ngày tải lên: 05/12/2016, 11:48

... the csc executable is included inyour path Also make sure that path of C# Compiler (csc.exe) is correct Aftercompiling your code, the C# compiler creates an exe file called first.exe underthe current ... still can be executed from managedcode using COM+ Using the N/ Direct features of C# and COM+, you can use the Clanguage API With the help of the COM+ run-time and the COM+ Common LanguageSpecification ... anobject All data type and components in C# are objects C++ programmers aresometimes confused when choosing different access operators to process object.With C# you use a dot (.) operator to access

Ngày tải lên: 05/12/2016, 12:45

... FaultHandlerActivity 89 The TransactionScopeActivity 90 The CompensatableSequenceActivity 91 Trang 10Table of ContentsThe CompensatableTransactionScopeActivity 91The CompensateActivity 92 The ConditionedActivityGroup ... dedicated to workflow communications The chapter explains how to use correlated local services for communication with a host process, and web service activities for communication across a network ... simplify a problem space For instance, a SendOrderToKitchen custom activity could encapsulate a web service call and other processing logic inside This activity is obviously specific to the restaurant

Ngày tải lên: 20/03/2019, 14:16

... Basic GDI+ Objects Chapter 3 The Graphics Class Section 3.1 Graphics Class Properties Section 3.2 Graphics Class Methods Section 3.3 The GDI+Painter Application Section 3.4 Drawing a Pie Chart ... graphics topics covered to reinforce the concepts presented." —Charles G Parker, President, Parallel Consulting, Inc. "Graphics Programming with GDI+ is a comprehensive reference for ... Web Section 12.5 Drawing a Line Chart Section 12.6 Drawing a Pie Chart Chapter 13 GDI+ Best Practices and Performance Techniques Section 13.1 Understanding the Rendering Process Section

Ngày tải lên: 12/08/2014, 19:20

... RectangleF rect2 = new RectangleF(40.2f, 40.6f, 100.5f, 100.0f); RectangleF rect1 = new RectangleF(pt, sz); Rectangle rect3 = Rectangle.Ceiling(rect1); Rectangle rect4 = Rectangle.Truncate(rect1); ... a 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 ... Round, Truncate, Union, Inflate, Ceiling, and Intersect methods of Rectangle// Create a Graphics object Graphics g = this.CreateGraphics(); // Create PointF, SizeF, and RectangleF objects PointF

Ngày tải lên: 12/08/2014, 19:20

... ApplyBtn_Click(object sender, // Create a hatch brush with selected // hatch style and colors Trang 28 new HatchBrush(style, forClr, backClr);If you compile and run the application and then click ... bricks LargeCheckerBoard A hatch with the appearance of a checker-board with squares that are twice the size of SmallCheckerBoard. LargeConfetti A hatch with the appearance of confetti that is composed ... this class Alternatively, an application can refer to the HatchBrushclass as System.Drawing.Drawing2D.HatchBrush public HatchBrush(HatchStyle, Color); public HatchBrush(HatchStyle, Color, Color);

Ngày tải lên: 12/08/2014, 19:20

... Create Graphics object Graphics g = this.CreateGraphics(); // Create Color object from ARGB Color redColor = Color.FromArgb(120, 255, 0, 0); // Create Color object form color name Color ... blueColor = Color.FromName("Blue"); // Create Color object from known color Color greenColor = Color.FromKnownColor(KnownColor.Green); // Create empty color Color tstColor = Color.Empty; ... text color AppWorkspace Multiple-document interface (MDI) workspace background color ControlDarkDark 3D control dark shadow color ControlLight 3D control highlight color ControlLightLight 3D control

Ngày tải lên: 12/08/2014, 19:20

... ExcludeClip to clip regions // Create a Graphics object Graphics g = this.CreateGraphics(); g.Clear(this.BackColor); // Create rectangles Rectangle rect1 = new Rectangle(20, 20, 60, 80); Rectangle ... SetClip, ResetClip, and IntersectClip methods // Create a Graphics object Graphics g = this.CreateGraphics(); g.Clear(this.BackColor); // Create rectangles and regions Rectangle rect1 = new Rectangle(20, ... the context menu click event handlers Listing 6.17 Menu item click event handlers private void CircleMenu_Click(object sender, // Create a Shape object and call // the GetRectRegion method

Ngày tải lên: 12/08/2014, 19:20

... Color.Green; colorMap2.OldColor = Color.Yellow; colorMap2.NewColor = Color.Navy; colorMap3.OldColor = Color.Blue; colorMap3.NewColor = Color.Aqua; // Create an... records describing the respective objects ... = new ColorMap(); ColorMap colorMap2 = new ColorMap(); ColorMap colorMap3 = new ColorMap(); // Set the ColorMap objects' properties colorMap1.OldColor = Color.Red; colorMap1.NewColor = Color.Green; ... EnumerateMetaFile_Click(object sender, System.EventArgs e) { // Create a Graphics object Graphics g = this.CreateGraphics(); g.Clear(this.BackColor); // Create a Metafile object from a file Metafile curMetafile

Ngày tải lên: 12/08/2014, 19:20

... Graphics object to AntiAlias, all graphics objects attached to that Graphics object will be anti-aliased A graphics container is a temporary graphics object that acts as a canvas for graphics shapes, ... Creating a Graphics Container The BeginContainer method of the Graphics class creates a container Each BeginContainer method is paired with an EndContainer method You can also create nested containers ... DrawTextMenu_Click(object sender, System.EventArgs e) { // Create a Graphics object and set its // background as the form's background Graphics g = this.CreateGraphics(); g.Clear(this.BackColor); // Create

Ngày tải lên: 12/08/2014, 19:20

... System.EventArgs e) Trang 7 // Create a Graphics object Graphics g = this.CreateGraphics(); g.Clear(this.BackColor); // Create a GraphicsPath object GraphicsPath path = new GraphicsPath(); // Add an ... Processing Recoloring, the process of changing image colors, is a good example of color transformation Recoloring includes changing colors, intensity, contrast, and brightness of an image It can ... component by 0.5, cutting its intensity by half Listing 10.19 uses the ColorMatrix object to scale image colors Listing 10.19 Scaling colors private void ScalingMenu_Click(object sender, // Create a

Ngày tải lên: 12/08/2014, 19:20

... the graphics items Listing 11.25 contains two methods The PrintGraphicsItems_Click method is a menu click event handler that creates a PrintDocument object, sets its PrintPage event, and calls the ... The Cancel button simply closes the dialog The code for the Set Properties and Cancel button click event handlers is given in Listing 11.43, in which we set the page settings, color, and landscape ... NormalBtn_Click(object sender, System.EventArgs e) { Trang 31 // Create a PrintDocument object PrintDocument pd = new PrintDocument(); // Add PrintPage event handler // Create a PrintDocument object

Ngày tải lên: 12/08/2014, 19:20

... graphics objects Graphics g = this.CreateGraphics(); g.Clear(this.BackColor); // Create a black pen Pen blackPen = new Pen(Color.Black, 2); // Create a graphics path GraphicsPath path = new GraphicsPath(); ... properties: ClipRectangle and Graphics.ClipRectangle indicates the rectangle in which to paint, and the Graphics property indicates the Graphics object associated with the paint event of a particular control ... of destination rectangle HDC hdcSrc, // handle to source device context int nXSrc, // x-coordinate of source upper left corner int nYSrc, // y-coordinate of source upper left corner DWORD dwRop

Ngày tải lên: 12/08/2014, 19:20

... Controls.Add(textBox); Control checkBox = factory.CreateCheckBox(); checkBox.Location = new Point (10, 50); Controls.Add(checkBox); Trang 37We can now create concrete types for this Interface Code Listing ... textBox.Location = new Point (10, 10); container.Controls.Add(textBox); Control checkBox = factory.CreateCheckBox(); checkBox.Location = new Point (10, 50); container.Controls.Add(checkBox); ... Abstract Factory What if there are no closely related objects, like TextBox, CheckBox, Button, etc.? Having an Abstract Factory to create a single object (which may contain other objects, of course),

Ngày tải lên: 05/12/2016, 12:48

... takes the program code (source code) and converts the source code to a machine language module (called an object file) Another specialized program, called a linker, combines this object file with ... efficiency at each stage As computing power increases, it places a higher demand on software and developers Companies must reduce costs, deliver software faster, and meet or exceed their customers’ ... Development Life Cycle helps achieve these goals by identifying inefficiencies and higher costs and fixing them to run smoothly Trang 93.4 Explain how the source code is compiled:- A compiler takes

Ngày tải lên: 28/02/2023, 21:52

... Read Michael Feathers’s book on legacy code 216 ■ Use NDepend to investigate your production code 216 ■ Use ReSharper to navigate and refactor production code 217 ■ Detect duplicate code (and ... solve? ScarcPro-ity kept us in the dark Later, machines became faster and we became intoxicated with interactive ing We could just type in code and change it on a whim The idea of desk-checking ... Dependency injection: inject a fake implementation into a unit under test 57 ■ Inject a fake at the constructor level (constructor injection) 57 Simulating exceptions from fakes 61 ■ Injecting

Ngày tải lên: 18/04/2017, 10:58

... tính cá nhân, còn các Server là các máy tính có cấu hình mạnh có chứa các cơ sở dữ liệu và các chương trình ứng dụng để phục vụ một dịch vụ nào đấy từ các yêu cầu của client Như hình sau: Cách ... trình C# - Trong mỗi tệp *.cs có các namespace Nếu không có namespase thì một namespace mặc định được trình biên dịch tự cung cấp Trong mỗi namespace, có thể có các cấu trúc (structs), các giao ... đặt tên cho các biến là cú pháp Pascal (Pascal notation) với ký tự đầu tiên hoa cho cách đặt tên hàm và hầu hết các định danh còn lại Các định danh không được trùng với các từ khoá mà C# đưa

Ngày tải lên: 10/12/2013, 14:24

... truyền vào: Tên File, Chế độ mở File và tên của DropDownList Sau khi ta đã thực hiện xong bước tách File Excel thành các Sheet và chart, ta chỉ cần lựa chọn các Sheet hoặc các Chart để hiển thị lên ... trong việc chuyển đổi các thuộc tính từ Excel sang Dot Net Bây giờ ta quay lại 2 hàm hiển thị Chart và Sheet ở bên trên Trước tiên là Hàm ExcelChartRead(Excel.Chart objExcelChart, Panel ctrlCollPane) ... File Excel trong ASP.NET sử dụng C Sharp Mục đích của bài viết này là làm thế nào để hiển thị chính xác giá trị hay nội dung của các Sheet, cả lời chú thích trong một trang aspx Điều này có thể

Ngày tải lên: 13/12/2013, 01:16