.NET String Split()

Question

It seems that the PowerShell -split operator and .NET Split() method act completely different.

.NET treats separator strings as if they were character arrays.

$str = "123456789"
Write-Host ".NET Split(): "
$lines = $str.Split("46")
Write-Host "Count: $($lines.Length)"
$lines

$str = "123456789"
Write-Host "-split operator: "
$lines = $str -split "46"
Write-Host "Count: $($lines.Length)"
$lines

Output:

.NET Split():
Count: 3
123
5
789


-split operator:
Count: 1
123456789

Is there a way to make a .NET application use the same technique as the PowerShell, and use the string separator as one solid unit? Hopefully, without RegEx.

This worked in PowerShell, using the Split():

Write-Host "Divided by 46:"
"123456789".Split([string[]]  "46", [StringSplitOptions]::None)

Write-Host "`n`nDivided by 45:"
"123456789".Split([string[]]  "45", [StringSplitOptions]::None)


Divided by 46:
123456789


Divided by 45:
123
6789

Answer 1

http://msdn.microsoft.com/en-us/library/system.string.split.aspx

When you're calling string.Split(string), it uses the string.Split(char[]) overload (as string could be casted to a char[], but not to string[]).

In order to use string.Split(string[], StringSplitOptions) overload, you must call it in a way "123456789".Split(new[] { "45" }, StringSplitOptions.None).