PowerShell error 'can't call null-value expresssion'

Asked Aug 28 '15 at 22:42

Active Aug 28 '15 at 22:42

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When I run my power shell script, I got the following error: My question is why I am getting such errorr? char:13 is $ in $results, that is the return value of what I call, why I am getting a 'can't call null-value expression'?

You cannot call a method on a null-valued expression.
At C:\test.ps1:79 char:13
+             $results = ($content -match "MyValues" -split "=")[1].Tr ...
+             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull

asked Aug 28 '15 at 22:42

n179911

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Is content a string or an array? – Mathias R. Jessen Aug 28 '15 at 23:10
4

It is easy to get this error in this case when $content is a single string in which case -match returns a boolean. Also when no lines in $content match MyValues. – Mike Zboray Aug 29 '15 at 01:17

PowerShell error 'can't call null-value expresssion'

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