In PowerShell Concatenate String is achieved by using the + operator. There are different ways to concatenate strings using the -f operator, and join operator. PowerShell built-in Concat() function is used for string concatenation.
In this article, we will discuss different ways for PowerShell string concatenation, append the string, concatenate two variables and concatenate the string with integers.
Let’s understand PowerShell string concatenation using different ways with examples.
Using + operator for PowerShell string concatenate
+ operator is used in PowerShell to concatenate string.
$firstName = "Shell" $lastName = "Geek" $fullName = $firstName + $lastName Write-Host "Concatenate String:" $fullName
In the above concatenation of two variables example, the $fullName variable contains a combined string.
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Using -f operator to PowerShell concatenation of strings
Using the -f operator in PowerShell, you can perform PowerShell concatenation of strings.
$Heading = "PowerShell Concatenate of String"
$Author = "By ShellAdmin"
$Title = "{0} {1}" -f $Heading,$Author
Write-Output $Title
In the above PowerShell concatenate string example,
we have two string variables $Heading and $Author.
Using the -f operator, it concatenates two strings variables.
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Using the join operator to join strings in PowerShell
Using the join operator in PowerShell to join strings using the separator.
$Title = $Heading,$Author -join "-" Write-Output $Title
In the above string concatenate example,
join operator in PowerShell use – separator to join two string variables.
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PowerShell String Concatenation with Integers
To perform concatenation of string with integers, the string variable has to be used first in the expression and later integer variable.
For example:
$strValue = "Total value of this asset:" $intValue = 15000 $strValue + $intValue
In the above string concatenate with integer example,
$strValue variable contains string data type value.
$intValue variable contains integer data type value.
The output of the above command is given
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However, if we swap the position of variables like
$intValue + $strValue
It will throw an exception, as it will try to convert the string value to int32 type and results in the input string, not in a correct format error.
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Using StringBuilder to PowerShell Concatenate String
Using System.Text.StringBuilder type in PowerShell, you can append string using Append().
$Heading = "PowerShell Concatenate of String" $Author = "By ShellAdmin" $WebTitle = New-Object -TypeName System.Text.StringBuilder $temp = $WebTitle.Append($Heading) $temp = $WebTitle.Append($Author) $WebTitle.ToString()
In the above example of PowerShell append string,
Using System.Text.StringBuilder type, it creates a new object as $WebTitle
We have used Append() function to append the string to the object.
To print object value, we need to convert it to a string using the ToString() function.
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Using PowerShell Concat() function for string concatenation.
Using PowerShell concat() function, it concate differnt strings.
$Heading = "PowerShell Concatenate of String" $Author = "By ShellAdmin" $WebTitle = [System.String]::Concat($Heading,$Author) Write-Output $WebTitle
In the above example of PowerShell Concat string, it uses Concat() function to combine two variables.
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Conclusion
In this article, we have covered the PowerShell concatenation of string.
In PowerShell, there are multiple ways to perform string concatenation.
Using + operator, -f operator, or join operator, string concatenation can be achieved.
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