barcode generator c# source code Implementing Interfaces in C#

Creator Denso QR Bar Code in C# Implementing Interfaces

Implementing Interfaces
QR Maker In C#.NET
Using Barcode drawer for .NET framework Control to generate, create Quick Response Code image in .NET framework applications.
QR Code Scanner In C#
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
Once an interface has been defined, one or more classes can implement that interface To implement an interface, the name of the interface is specified after the class name in just the same way that a base class is specified The general form of a class that implements an interface is shown here: class class-name : interface-name { // class-body } The name of the interface being implemented is specified in interface-name When a class implements an interface, the class must implement the entire interface It cannot pick and choose which parts to implement, for example A class can implement more than one interface When a class implements more than one interface, specify each interface in a comma-separated list A class can inherit a base class and also implement one or more interfaces In this case, the name of the base class must come first in the comma-separated list
Draw Bar Code In C#
Using Barcode creation for .NET Control to generate, create bar code image in Visual Studio .NET applications.
Bar Code Reader In Visual C#
Using Barcode decoder for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications.
12:
Make Denso QR Bar Code In .NET Framework
Using Barcode drawer for ASP.NET Control to generate, create Quick Response Code image in ASP.NET applications.
QR Code ISO/IEC18004 Creator In .NET Framework
Using Barcode maker for .NET framework Control to generate, create QR Code ISO/IEC18004 image in Visual Studio .NET applications.
Interfaces, Structures, and Enumerations
Print QR Code In VB.NET
Using Barcode maker for Visual Studio .NET Control to generate, create Quick Response Code image in .NET framework applications.
Encoding GTIN - 128 In C#.NET
Using Barcode creation for .NET framework Control to generate, create UCC.EAN - 128 image in .NET applications.
The methods that implement an interface must be declared public The reason for this is that methods are implicitly public within an interface, so their implementation must also be public Also, the return type and signature of the implementing method must match exactly the return type and signature specified in the interface definition Here is an example that implements the ISeries interface shown earlier It creates a class called ByTwos, which generates a series of numbers, each two greater than the previous one
Make UPC Code In Visual C#.NET
Using Barcode maker for Visual Studio .NET Control to generate, create Universal Product Code version A image in .NET applications.
Painting Code 39 Extended In C#
Using Barcode printer for .NET Control to generate, create Code 39 Extended image in .NET framework applications.
// Implement ISeries class ByTwos : ISeries { int start; int val; public ByTwos() { start = 0; val = 0; } public int GetNext() { val += 2; return val; } public void Reset() { val = start; } public void SetStart(int x) { start = x; val = start; } }
Print GS1 - 13 In C#
Using Barcode generator for Visual Studio .NET Control to generate, create GS1 - 13 image in .NET framework applications.
Drawing ANSI/AIM I-2/5 In Visual C#.NET
Using Barcode printer for .NET framework Control to generate, create Interleaved 2 of 5 image in .NET applications.
PART I PART I PART I
Bar Code Creator In Java
Using Barcode creator for BIRT Control to generate, create barcode image in BIRT applications.
UPC A Creator In Java
Using Barcode generation for Java Control to generate, create UPC-A Supplement 2 image in Java applications.
As you can see, ByTwos implements all three methods defined by ISeries As explained, this is necessary since a class cannot create a partial implementation of an interface Here is a class that demonstrates ByTwos:
EAN128 Creation In None
Using Barcode generator for Font Control to generate, create GS1-128 image in Font applications.
USS Code 39 Generation In None
Using Barcode maker for Microsoft Word Control to generate, create USS Code 39 image in Word applications.
// Demonstrate the ByTwos interface using System; class SeriesDemo { static void Main() { ByTwos ob = new ByTwos(); for(int i=0; i < 5; i++) ConsoleWriteLine("Next value is " + obGetNext()); ConsoleWriteLine("\nResetting"); obReset(); for(int i=0; i < 5; i++) ConsoleWriteLine("Next value is " + obGetNext());
Encode GS1 128 In .NET
Using Barcode generation for ASP.NET Control to generate, create EAN / UCC - 13 image in ASP.NET applications.
Make Bar Code In Java
Using Barcode creator for Eclipse BIRT Control to generate, create barcode image in Eclipse BIRT applications.
Part I:
Painting Bar Code In Java
Using Barcode creator for Android Control to generate, create bar code image in Android applications.
UPC-A Scanner In None
Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications.
The C# Language
ConsoleWriteLine("\nStarting at 100"); obSetStart(100); for(int i=0; i < 5; i++) ConsoleWriteLine("Next value is " + obGetNext()); } }
To compile SeriesDemo, you must include the files that contain ISeries, ByTwos, and SeriesDemo in the compilation The compiler will automatically compile all three files to create the final executable For example, if you called these files ISeriescs, ByTwoscs, and SeriesDemocs, then the following command line will compile the program:
>csc SeriesDemocs ISeriescs ByTwoscs
If you are using the Visual C++ IDE, simply add all three files to your C# project One other point: It is perfectly valid to put all three of these classes in the same file, too The output from this program is shown here:
Next Next Next Next Next value value value value value is is is is is 2 4 6 8 10
Resetting Next value Next value Next value Next value Next value
is is is is is
2 4 6 8 10
Starting at 100 Next value is 102 Next value is 104 Next value is 106 Next value is 108 Next value is 110
It is both permissible and common for classes that implement interfaces to define additional members of their own For example, the following version of ByTwos adds the method GetPrevious( ), which returns the previous value:
// Implement ISeries and add GetPrevious() class ByTwos : ISeries { int start; int val; int prev; public ByTwos() { start = 0; val = 0; prev = -2; }
12:
Interfaces, Structures, and Enumerations
public int GetNext() { prev = val; val += 2; return val; } public void Reset() { val = start; prev = start - 2; } public void SetStart(int x) { start = x; val = start; prev = val - 2; } // A method not specified by ISeries public int GetPrevious() { return prev; } }
Copyright © OnBarcode.com . All rights reserved.