Powershell 3 string manipulating using split and join [closed] - string

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I need to capitalize the first letter of each word using split an join using powershell 3.0
I have been going crazy trying to figure this out.
Any help would be appreciated.
Function Proper( [switch]$AllCaps, [switch]$title, [string]$textentered=" ")
{
if ($AllCaps)
{$textentered.Toupper()}
Elseif ($title)
{$textentered -split " "
$properwords = $textentered | foreach { $_ }
$properwords -join " "
$properwords.substring(0,1).toupper()+$properwords.substring(1).tolower()
}
}
proper -title "test test"

Answer 1

System.Globalization.TextInfo class has the ToTitleCase method you can use, just join your words as normal into a string (called $lowerstring for example) then call the method on that string using the `Get-Culture cmdlet::
$titlecasestring = (Get-Culture).TextInfo.ToTitleCase($lowerstring)
For the string concatenation I tend to use the following format:
$lowerstring = ("the " + "quick " + "brown " + "fox")
But the following are also valid:
$lowerstring = 'the','quick','brown','fox' -join " "
$lowerstring = $a,$b,$c,$d -join " "
EDIT:
Based on the code you supplied, you don't need to split/join strings if what you're passing in is just a phrase in a string, so the following is what you need
Function Proper{
Param ([Parameter(Mandatory=$true, Position=0)]
[string]$textentered,
[switch]$AllCaps,
[switch]$Title)
if ($AllCaps){$properwords = $textentered.Toupper()}
if ($title) {
$properwords = (Get-Culture).TextInfo.ToTitleCase($textentered)
}
if ((!($Title)) -and (!($AllCaps))){
Return $textentered}
}
Proper "test test" -AllCaps
Proper "test test" -Title
Proper "test test"
In the Param () block I set the $textentered parameter as mandatory, and that it must be the first parameter (Position = 0).
If neither of the AllCaps or Title parameters are passed, the original input string is passed back out, unaltered.