If your variable is $null and you try to index it like an array, you get a System.Management.Automation.RuntimeException exception with the message Cannot index into a null array.PowerShell Copy PS> $empty = $null PS> $empty[0] Error: Cannot index into a null array. ...
To create and initialize an array, assign multiple values to a variable. The values stored in the array are delimited with a comma and separated from the variable name by the assignment operator (=).For example, to create an array named $A that contains the seven numeric (integer) values ...
可以在管道中的每个对象或选定对象执行操作的命令中使用此变量$ARGSRepresents an array of the undeclared parameters and/orparametervalues that are passed to a function, script, or script block.$CONSOLEFILENAMERepresents the path of the console file (.psc1) that was most recently usedinthe session.$...
This example assigns zero to the $a variable if the value of $b is less than zero. It assigns the value of $b to $a if the value of $b isn't less than zero. To assign an array (multiple values) to a variable, separate the values with commas, as follows: PowerShell Afrita ...
A cast can also be performed when a variable is assigned to usingcast notation. Comma operator, As a binary operator, the comma creates an array or appends to the array being created. In expression mode, as a unary operator, the comma creates an array with just one member. Place the com...
If you want to allow more than one value for theComputerNameparameter, use theStringdatatype but add square brackets ([]) to the datatype to allow an array of strings. PowerShell functionTest-MrParameterValidation{ [CmdletBinding()]param( [Parameter(Mandatory)] [string[]]$ComputerName)Write-...
When you use positional parameters, type one or more values after the function name. Positional parameter values are assigned to the$argsarray variable. The value that follows the function name is assigned to the first position in the$argsarray,$args[0]. ...
A PowerShell array is a component that enables the storage of more than one item in a variable or a field. For instance, to assign multiple values to a variable, use the script$a=1,2,3. PowerShell treats each item in an array as a separate element. To address each item in an arra...
Dependant on the users site name it will read the array and assign them to the correct OU.As the names of the sites has proven to be inconsistant or at least 3 variants in some cases, I created an array (could it be classed as a dictionary file?). to handle the di...
Adding a new element to an existing array If I want to add an element to an existing array, it might make sense to choose the next index number, and attempt to assign a value in the same way that I change an existing value. When I do this, however, Windows PowerShell generates an ...