Console Input and Output in Visual C#.NET

Printing PDF417 in Visual C#.NET Console Input and Output
Console Input and Output
PDF-417 2d Barcode Drawer In Visual C#.NET
Using Barcode creator for .NET framework Control to generate, create PDF417 image in Visual Studio .NET applications.
This chapter already used SystemConsoleWriteLine repeatedly for writing out text to the command console In addition to being able to write out data, a program needs to be able to accept data that a user may enter
Bar Code Maker In C#.NET
Using Barcode printer for .NET Control to generate, create barcode image in .NET applications.
1: Introducing C#
Make PDF-417 2d Barcode In .NET
Using Barcode maker for ASP.NET Control to generate, create PDF-417 2d barcode image in ASP.NET applications.
Getting Input from the Console One of the ways to retrieve text that is entered at the console is to use SystemConsoleReadLine() This method stops the program execution so that the user can enter characters When the user presses the Enter key, creating a newline, the program continues The output, also known as the return, from the SystemConsoleReadLine() method is the string of text that was entered Consider Listing 113 and the corresponding output shown in Output 14
PDF-417 2d Barcode Generation In .NET Framework
Using Barcode generation for .NET framework Control to generate, create PDF 417 image in .NET framework applications.
Listing 113: Using SystemConsoleReadLine()
Creating PDF 417 In VB.NET
Using Barcode generation for VS .NET Control to generate, create PDF-417 2d barcode image in VS .NET applications.
class HeyYou { static void Main() { string firstName; string lastName; SystemConsoleWriteLine("Hey you!"); SystemConsoleWrite("Enter your first name: "); firstName = SystemConsoleReadLine(); SystemConsoleWrite("Enter your last name: "); lastName = SystemConsoleReadLine(); } }
Drawing Barcode In C#
Using Barcode maker for Visual Studio .NET Control to generate, create bar code image in Visual Studio .NET applications.
OUTPUT 14:
Bar Code Creation In Visual C#
Using Barcode creator for .NET Control to generate, create bar code image in .NET applications.
>HeyYouexe Hey you! Enter your first name: Inigo Enter your last name: Montoya
USS Code 39 Maker In Visual C#.NET
Using Barcode maker for .NET framework Control to generate, create Code 3/9 image in VS .NET applications.
After each prompt, this program uses the SystemConsoleReadLine() method to retrieve the text the user entered and assign it to an appropriate variable By the time the second SystemConsoleReadLine() assignment completes, firstName refers to the value Inigo and lastName refers to the value Montoya
Making Code 128 Code Set C In Visual C#
Using Barcode generator for .NET framework Control to generate, create Code 128C image in .NET applications.
Console Input and Output
Data Matrix ECC200 Encoder In Visual C#
Using Barcode printer for Visual Studio .NET Control to generate, create Data Matrix ECC200 image in Visual Studio .NET applications.
ADVANCED TOPIC SystemConsoleRead() In addition to the SystemConsoleReadLine() method, there is also a SystemConsoleRead() method However, the data type returned by the SystemConsoleRead() method is an integer corresponding to the character value read, or 1 if no more characters are available To retrieve the actual character, it is necessary to first cast the integer to a character, as shown in Listing 114
Draw GTIN - 128 In Java
Using Barcode maker for Java Control to generate, create EAN 128 image in Java applications.
Listing 114: Using SystemConsoleRead()
Printing Barcode In VB.NET
Using Barcode maker for Visual Studio .NET Control to generate, create bar code image in .NET framework applications.
int readValue; char character; readValue = SystemConsoleRead(); character = (char) readValue; SystemConsoleWrite(character);
ECC200 Decoder In .NET
Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in VS .NET applications.
The SystemConsoleRead() method does not return the input until the user presses the Enter key; no processing of characters will begin, even if the user types multiple characters before pressing the Enter key In C# 20, the CLR designers added a new method called SystemConsoleReadKey(), which, in contrast to SystemConsoleRead(), returns the input after a single keystroke It allows the developer to intercept the keystroke and perform actions such as key validation, restricting the characters to numerics
Printing Code 128 Code Set C In Java
Using Barcode encoder for Java Control to generate, create Code 128 Code Set C image in Java applications.
Writing Output to the Console In Listing 113, you prompt the user for his first and last names using the method SystemConsoleWrite() rather than SystemConsoleWriteLine() Instead of placing a newline character after displaying the text, the SystemConsoleWrite() method leaves the current position on the same line In this way, any text the user enters will be on the same line as the prompt for input The output from Listing 113 demonstrates the effect of SystemConsoleWrite() The next step is to write the values retrieved using SystemConsoleReadLine() back to the console In the case of Listing 115, the program writes
ANSI/AIM Code 39 Generator In .NET Framework
Using Barcode maker for ASP.NET Control to generate, create Code 39 Extended image in ASP.NET applications.
1: Introducing C#
Encoding EAN 128 In .NET Framework
Using Barcode creation for ASP.NET Control to generate, create EAN / UCC - 14 image in ASP.NET applications.
out the user s full name However, instead of using SystemConsoleWriteLine() as before, this code will use a slight variation Output 15 shows the corresponding output
Barcode Maker In Visual Studio .NET
Using Barcode generation for ASP.NET Control to generate, create barcode image in ASP.NET applications.
Listing 115: Formatting Using SystemConsoleWriteLine()
Recognize Code 3/9 In .NET Framework
Using Barcode reader for VS .NET Control to read, scan read, scan image in VS .NET applications.
class HeyYou { static void Main() { string firstName; string lastName; SystemConsoleWriteLine("Hey you!"); SystemConsoleWrite("Enter your first name: "); firstName = SystemConsoleReadLine(); SystemConsoleWrite("Enter your last name: "); lastName = SystemConsoleReadLine(); SystemConsoleWriteLine("Your full name is {0} {1}", firstName, lastName); } }
Encode EAN13 In .NET
Using Barcode generator for ASP.NET Control to generate, create EAN13 image in ASP.NET applications.
OUTPUT 15:
Code 39 Extended Generation In Visual Basic .NET
Using Barcode encoder for .NET framework Control to generate, create USS Code 39 image in VS .NET applications.
Hey you! Enter your first name: Inigo Enter your last name: Montoya Your full name is Inigo Montoya
Instead of writing out Your full name is followed by another Write statement for firstName, a third Write statement for the space, and finally a WriteLine statement for lastName, Listing 115 writes out the entire output using composite formatting With composite formatting, the code first supplies a format string to define the output format In this example, the format string is "Your full name is {0} {1}" It identifies two indexed placeholders for data insertion in the string Note that the index value begins at zero Each inserted parameter (known as a format item) appears after the format string in the order corresponding to the index value In this example, since firstName is the first