Error: Variable is not assigned in the method: Unterschied zwischen den Versionen

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== Example to reproduce the error ==
 
== Example to reproduce the error ==
−
<source lang="powershell>
+
<source lang="powershell">
 
Class CustomFunction {
 
Class CustomFunction {
 
     [String]$Version
 
     [String]$Version
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*Add the Scope to your variable ($GLOBAL:<YOUR_VARIABLE>)
 
*Add the Scope to your variable ($GLOBAL:<YOUR_VARIABLE>)
 
'''Here the solution for the example above:'''
 
'''Here the solution for the example above:'''
−
<source lang="powershell>
+
<source lang="powershell">
 
Class CustomFunction {
 
Class CustomFunction {
 
     [String]$Version
 
     [String]$Version

Version vom 16. August 2021, 08:31 Uhr

You are writing a own PowerShell class and get the following error "Variable is not assigned in the method". -> Here is the solution for this.

Error

Variable is not assigned in the method.


Cause

This error occurs because you are using a predefinied variable in a class method and the class method is in a different scope.


Example to reproduce the error

Class CustomFunction {
    [String]$Version
 
    GetVersion() {
        If ($PSVersionTable) {
            $this.Version = $PSVersionTable.PSVersion
        }
    }
}
 
$CustomFunction = [CustomFunction]::new()
$CustomFunction.GetVersion()
Write-Host $CustomFunction.Version


Solution

  • Add the Scope to your variable ($GLOBAL:<YOUR_VARIABLE>)

Here the solution for the example above: 

Class CustomFunction {
    [String]$Version
 
    GetVersion() {
        If ($GLOBAL:PSVersionTable) {
            $this.Version = $GLOBAL:PSVersionTable.PSVersion
        }
    }
}
 
$CustomFunction = [CustomFunction]::new()
$CustomFunction.GetVersion()
Write-Host $CustomFunction.Version
Von „http://wiki.webperfect.ch/index.php?title=Error:_Variable_is_not_assigned_in_the_method&oldid=2892“