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VB.NET String

ArrayClassCollectionsFileStringConsoleDataEnumInterfaceLambdaLoopNumberProcess

PropertyRegexSortStringBuilderStructureSubTimeWindows

Strings store collections of characters. There are many different functions you can use on Strings

in the VB.NET programming language. This selection of content details the String-based

functions in this language.

Example

To start, this program demonstrates several concepts: how to declare and initialize a String; how

to use a String literal such as "dot"; and how to concatenate strings with the plus operator and

with the String.Concat method.

Program that uses String [VB.NET]

Module Module1

Sub Main()

Dim value As String = "dot"

value = value + "net"

Dim result As String = String.Concat(value, "perls")

Console.WriteLine(result)

End Sub

End Module

Output

dotnetperls

http://www.dotnetperls.com/array-vbnethttp://www.dotnetperls.com/class-vbnethttp://www.dotnetperls.com/class-vbnethttp://www.dotnetperls.com/collections-vbnethttp://www.dotnetperls.com/collections-vbnethttp://www.dotnetperls.com/file-vbnethttp://www.dotnetperls.com/file-vbnethttp://www.dotnetperls.com/file-vbnethttp://www.dotnetperls.com/console-write-vbnethttp://www.dotnetperls.com/console-write-vbnethttp://www.dotnetperls.com/datatable-vbnethttp://www.dotnetperls.com/datatable-vbnethttp://www.dotnetperls.com/enum-vbnethttp://www.dotnetperls.com/enum-vbnethttp://www.dotnetperls.com/interface-vbnethttp://www.dotnetperls.com/interface-vbnethttp://www.dotnetperls.com/lambda-vbnethttp://www.dotnetperls.com/lambda-vbnethttp://www.dotnetperls.com/for-vbnethttp://www.dotnetperls.com/for-vbnethttp://www.dotnetperls.com/number-vbnethttp://www.dotnetperls.com/number-vbnethttp://www.dotnetperls.com/process-start-vbnethttp://www.dotnetperls.com/process-start-vbnethttp://www.dotnetperls.com/process-start-vbnethttp://www.dotnetperls.com/property-vbnethttp://www.dotnetperls.com/regex-match-vbnethttp://www.dotnetperls.com/regex-match-vbnethttp://www.dotnetperls.com/sort-vbnethttp://www.dotnetperls.com/sort-vbnethttp://www.dotnetperls.com/stringbuilder-vbnethttp://www.dotnetperls.com/stringbuilder-vbnethttp://www.dotnetperls.com/structurehttp://www.dotnetperls.com/structurehttp://www.dotnetperls.com/subhttp://www.dotnetperls.com/subhttp://www.dotnetperls.com/datetime-vbnethttp://www.dotnetperls.com/datetime-vbnethttp://www.dotnetperls.com/windows-vbnethttp://www.dotnetperls.com/windows-vbnethttp://www.dotnetperls.com/windows-vbnethttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/windows-vbnethttp://www.dotnetperls.com/datetime-vbnethttp://www.dotnetperls.com/subhttp://www.dotnetperls.com/structurehttp://www.dotnetperls.com/stringbuilder-vbnethttp://www.dotnetperls.com/sort-vbnethttp://www.dotnetperls.com/regex-match-vbnethttp://www.dotnetperls.com/property-vbnethttp://www.dotnetperls.com/process-start-vbnethttp://www.dotnetperls.com/number-vbnethttp://www.dotnetperls.com/for-vbnethttp://www.dotnetperls.com/lambda-vbnethttp://www.dotnetperls.com/interface-vbnethttp://www.dotnetperls.com/enum-vbnethttp://www.dotnetperls.com/datatable-vbnethttp://www.dotnetperls.com/console-write-vbnethttp://www.dotnetperls.com/file-vbnethttp://www.dotnetperls.com/collections-vbnethttp://www.dotnetperls.com/class-vbnethttp://www.dotnetperls.com/array-vbnet

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Core functions. These functions and subroutines are some of the most useful and widely used in

the VB.NET language. Having an understanding of them is important for beginning VB.NET

developers. This knowledge will carry over to other .NET languages as well.

EqualsFormatInsertLengthRemoveReplaceString ConstructorSubstringToCharArray

ToString

Manipulate strings. These examples manipulate Strings and arrays of Strings in various ways.

Strings are often stored in arrays.

String ArrayReverseString LoopMid

Upper and lower

The .NET Framework provides us with many different ways to change the cases of characters in

Strings. With the VB.NET language, we can use these functions or design our own, custom

functions.

ToLowerToUpperUppercase First Letter: StringToTitleCase Function

Split and Join

Some of the more popular String functions in the VB.NET language include the Split and Join

methods. We provide examples in the following tutorials.

SplitJoin

Search

http://www.dotnetperls.com/string-equals-vbnethttp://www.dotnetperls.com/string-format-vbnethttp://www.dotnetperls.com/string-format-vbnethttp://www.dotnetperls.com/insert-vbnethttp://www.dotnetperls.com/insert-vbnethttp://www.dotnetperls.com/string-length-vbnethttp://www.dotnetperls.com/string-length-vbnethttp://www.dotnetperls.com/remove-vbnethttp://www.dotnetperls.com/remove-vbnethttp://www.dotnetperls.com/replace-vbnethttp://www.dotnetperls.com/replace-vbnethttp://www.dotnetperls.com/string-constructor-vbnethttp://www.dotnetperls.com/string-constructor-vbnethttp://www.dotnetperls.com/substring-vbnethttp://www.dotnetperls.com/substring-vbnethttp://www.dotnetperls.com/tochararray-vbnethttp://www.dotnetperls.com/tochararray-vbnethttp://www.dotnetperls.com/tochararray-vbnethttp://www.dotnetperls.com/tostring-vbnethttp://www.dotnetperls.com/string-array-vbnethttp://www.dotnetperls.com/reverse-string-vbnethttp://www.dotnetperls.com/reverse-string-vbnethttp://www.dotnetperls.com/loop-string-vbnethttp://www.dotnetperls.com/loop-string-vbnethttp://www.dotnetperls.com/midhttp://www.dotnetperls.com/midhttp://www.dotnetperls.com/midhttp://www.dotnetperls.com/tolower-vbnethttp://www.dotnetperls.com/toupper-vbnethttp://www.dotnetperls.com/toupper-vbnethttp://www.dotnetperls.com/uppercase-first-letter-vbnethttp://www.dotnetperls.com/uppercase-first-letter-vbnethttp://www.dotnetperls.com/totitlecase-vbnethttp://www.dotnetperls.com/totitlecase-vbnethttp://www.dotnetperls.com/totitlecase-vbnethttp://www.dotnetperls.com/split-vbnethttp://www.dotnetperls.com/join-vbnethttp://www.dotnetperls.com/join-vbnethttp://www.dotnetperls.com/join-vbnethttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/join-vbnethttp://www.dotnetperls.com/split-vbnethttp://www.dotnetperls.com/totitlecase-vbnethttp://www.dotnetperls.com/uppercase-first-letter-vbnethttp://www.dotnetperls.com/toupper-vbnethttp://www.dotnetperls.com/tolower-vbnethttp://www.dotnetperls.com/midhttp://www.dotnetperls.com/loop-string-vbnethttp://www.dotnetperls.com/reverse-string-vbnethttp://www.dotnetperls.com/string-array-vbnethttp://www.dotnetperls.com/tostring-vbnethttp://www.dotnetperls.com/tochararray-vbnethttp://www.dotnetperls.com/substring-vbnethttp://www.dotnetperls.com/string-constructor-vbnethttp://www.dotnetperls.com/replace-vbnethttp://www.dotnetperls.com/remove-vbnethttp://www.dotnetperls.com/string-length-vbnethttp://www.dotnetperls.com/insert-vbnethttp://www.dotnetperls.com/string-format-vbnethttp://www.dotnetperls.com/string-equals-vbnet

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If you need to search your String for a character pattern or a single character, these IndexOf and

LastIndexOf functions are ideal.

ContainsIndexOfIndexOfAnyLastIndexOfLastIndexOfAny

Whitespace

Some functions on the string type typically are used to handle whitespace characters; these

functions include the Trim function and its variants TrimStart and TrimEnd.

TrimTrimEndTrimStartNewLineLSet and RSetLTrim and RTrim

Ends and starts

Sometimes you need to see if one String ends with another String, or if one String starts with

another String. To our relief, we can use the EndsWith and StartsWith functions.

EndsWithStartsWith

ROT13

http://www.dotnetperls.com/contains-vbnethttp://www.dotnetperls.com/indexof-vbnethttp://www.dotnetperls.com/indexof-vbnethttp://www.dotnetperls.com/indexofany-vbnethttp://www.dotnetperls.com/indexofany-vbnethttp://www.dotnetperls.com/lastindexof-vbnethttp://www.dotnetperls.com/lastindexof-vbnethttp://www.dotnetperls.com/lastindexofany-vbnethttp://www.dotnetperls.com/lastindexofany-vbnethttp://www.dotnetperls.com/lastindexofany-vbnethttp://www.dotnetperls.com/trim-vbnethttp://www.dotnetperls.com/trimend-vbnethttp://www.dotnetperls.com/trimend-vbnethttp://www.dotnetperls.com/trimstart-vbnethttp://www.dotnetperls.com/trimstart-vbnethttp://www.dotnetperls.com/newline-vbnethttp://www.dotnetperls.com/newline-vbnethttp://www.dotnetperls.com/lset-rsethttp://www.dotnetperls.com/lset-rsethttp://www.dotnetperls.com/ltrimhttp://www.dotnetperls.com/ltrimhttp://www.dotnetperls.com/ltrimhttp://www.dotnetperls.com/endswith-vbnethttp://www.dotnetperls.com/startswith-vbnethttp://www.dotnetperls.com/startswith-vbnethttp://www.dotnetperls.com/startswith-vbnethttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/startswith-vbnethttp://www.dotnetperls.com/endswith-vbnethttp://www.dotnetperls.com/ltrimhttp://www.dotnetperls.com/lset-rsethttp://www.dotnetperls.com/newline-vbnethttp://www.dotnetperls.com/trimstart-vbnethttp://www.dotnetperls.com/trimend-vbnethttp://www.dotnetperls.com/trim-vbnethttp://www.dotnetperls.com/lastindexofany-vbnethttp://www.dotnetperls.com/lastindexof-vbnethttp://www.dotnetperls.com/indexofany-vbnethttp://www.dotnetperls.com/indexof-vbnethttp://www.dotnetperls.com/contains-vbnet

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The ROT13 encoding algorithm is a clever method that shifts the letters in the alphabet by 13

places in two directions based on their values. It is easily reversed. We present a complete

implementation in the VB.NET language.

ROT13

Convert

It is often necessary to convert Strings to other types, such as Integers. Conversely, most types

can be converted to Strings with ToString. We examine String conversions.

CStrChar Array to StringList to StringString Array to StringString to Integer

Select Case

A String instance can be used in a Select Case statement in the VB.NET language. A logical

decision is made based on the String's character data.

Select Case

Summary

The String type in the VB.NET language is powerful, but also has some limitations. In situations

where you can improve performance by mutating an existing string, you will need to use an

alternative type such as StringBuilder.

Note: Strings in the VB.NET language cannot be changed after they are created.

http://www.dotnetperls.com/rot13-vbnethttp://www.dotnetperls.com/rot13-vbnethttp://www.dotnetperls.com/cstrhttp://www.dotnetperls.com/convert-char-array-string-vbnethttp://www.dotnetperls.com/convert-char-array-string-vbnethttp://www.dotnetperls.com/convert-list-string-vbnethttp://www.dotnetperls.com/convert-list-string-vbnethttp://www.dotnetperls.com/convert-string-array-string-vbnethttp://www.dotnetperls.com/convert-string-array-string-vbnethttp://www.dotnetperls.com/convert-string-integerhttp://www.dotnetperls.com/convert-string-integerhttp://www.dotnetperls.com/convert-string-integerhttp://www.dotnetperls.com/select-case-string-vbnethttp://www.dotnetperls.com/select-case-string-vbnethttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/select-case-string-vbnethttp://www.dotnetperls.com/convert-string-integerhttp://www.dotnetperls.com/convert-string-array-string-vbnethttp://www.dotnetperls.com/convert-list-string-vbnethttp://www.dotnetperls.com/convert-char-array-string-vbnethttp://www.dotnetperls.com/cstrhttp://www.dotnetperls.com/rot13-vbnet

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.NET

http://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vbhttp://www.dotnetperls.com/vb