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 CustomClass {
 
     [String]$Version
 
     [String]$Version
  
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}
 
}
  
−
$CustomFunction = [CustomFunction]::new()
+
$CustomClass = [CustomClass]::new()
−
$CustomFunction.GetVersion()
+
$CustomClass.GetVersion()
−
Write-Host $CustomFunction.Version
+
Write-Host $CustomClass.Version
 
</source>
 
</source>
  
  
 
== Solution ==
 
== Solution ==
−
*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 CustomClass {
 
     [String]$Version
 
     [String]$Version
  
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}
 
}
  
−
$CustomFunction = [CustomFunction]::new()
+
$CustomClass = [CustomClass]::new()
−
$CustomFunction.GetVersion()
+
$CustomClass.GetVersion()
−
Write-Host $CustomFunction.Version
+
Write-Host $CustomClass.Version
 
</source>
 
</source>
  

Aktuelle Version vom 16. August 2021, 13:27 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 CustomClass {
    [String]$Version
 
    GetVersion() {
        If ($PSVersionTable) {
            $this.Version = $PSVersionTable.PSVersion
        }
    }
}
 
$CustomClass = [CustomClass]::new()
$CustomClass.GetVersion()
Write-Host $CustomClass.Version


Solution

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

Here the solution for the example above: 

Class CustomClass {
    [String]$Version
 
    GetVersion() {
        If ($GLOBAL:PSVersionTable) {
            $this.Version = $GLOBAL:PSVersionTable.PSVersion
        }
    }
}
 
$CustomClass = [CustomClass]::new()
$CustomClass.GetVersion()
Write-Host $CustomClass.Version
Von „http://wiki.webperfect.ch/index.php?title=Error:_Variable_is_not_assigned_in_the_method&oldid=2897“