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C# Classes

C# Csharp

VB Net

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Result

Four string arrays are initialized.

The above Main

functionshows four

string arrays, each

equivalent to thecompiler. The biggest difference is that the first

three arrays are declared on one line, while

the fourth array is assigned in separate

statements.

Tip:

The fourth array would allow you to test

each value or insert logic as you assign it.

This is sometimes useful.

The above

initializationseach

result in several

intermediate language

instructions. To create the

array reference, "newarr

string" is emitted. Andthen to assign each

element the instruction

"stelem" is used.

newarr Instruction

stelem Instruction

Fields

Next we use string arrays as fields orproperties in classes. This is useful for storing

values, either statically or in instances. You can

also return string arrays, with methods or

indexers.

Next:

The first part of the code is the Main

method, which is the standard program

http://www.dotnetperls.com/stelemhttp://www.dotnetperls.com/newarr

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entry point.

Then:

A new

instance of

the Test class is created.

That class contains an array of strings.

Program that uses string array: C#

class Program{ static void Main() { // Create new instance with string array. Test test = new Test();

// Loop over elements with property.

foreach (string element in test.Elements) { System.Console.WriteLine(element); } System.Console.WriteLine(test[0]); // Get first string element }}

public class Test{ ///

/// String array field instance. /// string[]_elements = { "one", "two", "three" };

/// /// String array property getter. /// public string[] Elements { get { return _elements; } }

/// /// String array indexer. /// public string this[int index] { get { return _elements[index]; } }}

Output

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Array Property, Return Empty Array

TypesThis article focuses on

string arrays, and string

arrays are different

from other arrays insome ways. Strings are

the only data type you

can declare with quoted

values. Also, strings are

reference types and can

be null, unlike integers.

Even thoughstrings

and string arrays are

different in their syntax,

the general usage

remains the same. You

could substitute int

arrays or object arrays and the balance of the

program would not change much.

Convert:A common problem with string arrays is

converting them to other types of arrays

and strings. Custom methods are often

used.

Tip:

This site has more detailed information

about converting string arrays to strings,

and char arrays and strings.

Convert String Array to String

LoopsTo continue, you can loop over string arrays in

your C# programs. There are two main ways

to loop over string arrays: the foreach and for-

loops. These loop constructs are covered in

http://www.dotnetperls.com/convert-string-array-stringhttp://www.dotnetperls.com/array-property

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Programming in C#

C# Code

C# Tutorial

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