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PowerShell Tip: Validating String

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Summary

This TechNet wiki is to show a simple tricks to validate the strings using PowerShell.

  

Convert to Upper and Lower case

The give string is 'PowerShell'

  

'PowerShell' |  GM

 

TypeName: System.String

'PowerShell'. ToUpper ( )
'PowerShell'. ToLower ( )

 

Search Character in the String

 

[char]$search  =  Read-Host  'Enter a character' 'PowerShell'. Contains ($search )

Or alternative we can use -match operator

'PowerShell'  -match   'P'

Select first 5 characters

'PowerShell'. ToCharArray (0,5 )  -join  ''

Syntax: 'String'.ToCharArray(Int StartIndex, Int Length). 0 is start index and required lenght is 5.

Remove White Space at the End

'PowerShell '. TrimEnd ( )

Remove Characters from the String

The below code will remove first 3 characters from the given string.

'PowerShell'. Remove (0,3 )

To remove last 3 characters we need to use sub string

$string  =  'PowerShell' $string. Substring (0,$string. Length-3 )

 

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