barcode generator c# source code PART I PART I PART I in C#.NET

Painting Denso QR Bar Code in C#.NET PART I PART I PART I

PART I PART I PART I
QR-Code Encoder In C#
Using Barcode generation for Visual Studio .NET Control to generate, create Denso QR Bar Code image in Visual Studio .NET applications.
Decoding QR Code In Visual C#
Using Barcode reader for .NET framework Control to read, scan read, scan image in .NET framework applications.
Anonymous Methods
Barcode Maker In C#
Using Barcode generator for .NET framework Control to generate, create bar code image in VS .NET applications.
Bar Code Scanner In Visual C#.NET
Using Barcode scanner for VS .NET Control to read, scan read, scan image in .NET framework applications.
An anonymous method is one way to create an unnamed block of code that is associated with a specific delegate instance An anonymous method is created by following the keyword delegate with a block of code To see how this is done, let s begin with a simple example The following program uses an anonymous method that counts from 0 to 5
Quick Response Code Encoder In .NET Framework
Using Barcode generation for ASP.NET Control to generate, create Quick Response Code image in ASP.NET applications.
Drawing Denso QR Bar Code In .NET
Using Barcode generator for .NET framework Control to generate, create QR Code image in Visual Studio .NET applications.
// Demonstrate an anonymous method using System; // Declare a delegate type delegate void CountIt(); class AnonMethDemo { static void Main() { // Here, the code for counting is passed // as an anonymous method CountIt count = delegate { // This is the block of code passed to the delegate for(int i=0; i <= 5; i++) ConsoleWriteLine(i); }; // notice the semicolon count(); } }
Drawing QR-Code In VB.NET
Using Barcode maker for .NET framework Control to generate, create QR Code image in VS .NET applications.
Barcode Creation In Visual C#
Using Barcode printer for Visual Studio .NET Control to generate, create bar code image in Visual Studio .NET applications.
This program first declares a delegate type called CountIt that has no parameters and returns void Inside Main( ), a CountIt instance called count is created, and it is passed the block of code that follows the delegate keyword This block of code is the anonymous method that will be executed when count is called Notice that the block of code is followed by a semicolon, which terminates the declaration statement The output from the program is shown here:
Generating Data Matrix 2d Barcode In Visual C#
Using Barcode drawer for VS .NET Control to generate, create Data Matrix 2d barcode image in .NET framework applications.
UPCA Maker In Visual C#.NET
Using Barcode creator for .NET framework Control to generate, create UPC-A Supplement 2 image in .NET applications.
0 1 2 3 4 5
Generate EAN / UCC - 13 In Visual C#.NET
Using Barcode creator for .NET Control to generate, create USS-128 image in VS .NET applications.
Encoding Identcode In C#.NET
Using Barcode creator for VS .NET Control to generate, create Identcode image in .NET applications.
Part I:
Create Barcode In None
Using Barcode creator for Software Control to generate, create barcode image in Software applications.
Barcode Scanner In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
The C# Language
EAN13 Drawer In Java
Using Barcode creator for Java Control to generate, create EAN13 image in Java applications.
Drawing European Article Number 13 In VB.NET
Using Barcode creation for VS .NET Control to generate, create GS1 - 13 image in .NET applications.
Pass Arguments to an Anonymous Method
EAN / UCC - 13 Reader In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
UPC Symbol Printer In VB.NET
Using Barcode creator for Visual Studio .NET Control to generate, create UPC-A Supplement 2 image in .NET applications.
It is possible to pass one or more arguments to an anonymous method To do so, follow the delegate keyword with a parenthesized parameter list Then, pass the argument(s) to the delegate instance when it is called For example, here is the preceding program rewritten so that the ending value for the count is passed:
Barcode Encoder In None
Using Barcode generator for Office Excel Control to generate, create barcode image in Microsoft Excel applications.
GTIN - 12 Printer In .NET
Using Barcode creation for ASP.NET Control to generate, create GTIN - 12 image in ASP.NET applications.
// Demonstrate an anonymous method that takes an argument using System; // Notice that CountIt now has a parameter delegate void CountIt(int end); class AnonMethDemo2 { static void Main() { // Here, the ending value for the count // is passed to the anonymous method CountIt count = delegate (int end) { for(int i=0; i <= end; i++) ConsoleWriteLine(i); }; count(3); ConsoleWriteLine(); count(5); } }
In this version, CountIt now takes an integer argument Notice how the parameter list is specified after the delegate keyword when the anonymous method is created The code inside the anonymous method has access to the parameter end in just the same way it would if a named method were being created The output from this program is shown next:
0 1 2 3 0 1 2 3 4 5
Return a Value from an Anonymous Method
An anonymous method can return a value The value is returned by use of the return statement, which works the same in an anonymous method as it does in a named method As you would expect, the type of the return value must be compatible with the return type
15:
Delegates, Events, and Lambda Expressions
specified by the delegate For example, here the code that performs the count also computes the summation of the count and returns the result:
PART I PART I PART I
// Demonstrate an anonymous method that returns a value using System; // This delegate returns a value delegate int CountIt(int end); class AnonMethDemo3 { static void Main() { int result; // Here, the ending value for the count // is passed to the anonymous method // A summation of the count is returned CountIt count = delegate (int end) { int sum = 0; for(int i=0; i <= end; i++) { ConsoleWriteLine(i); sum += i; } return sum; // return a value from an anonymous method }; result = count(3); ConsoleWriteLine("Summation of 3 is " + result); ConsoleWriteLine(); result = count(5); ConsoleWriteLine("Summation of 5 is " + result); } }
In this version, the value of sum is returned by the code block that is associated with the count delegate instance Notice that the return statement is used in an anonymous method in just the same way that it is used in a named method The output is shown here:
Copyright © OnBarcode.com . All rights reserved.