posts-powershell

To check whether a string contains a valid host name, you can use the CheckHostName() method provided by the System.URI type. It will return...

To make sure user input is a valid URL, you can use the System.URI type. Try to convert the raw string into this type. If it works, the string is a...

To reverse the order of elements in an array, the most efficient way is to use the [Array] type and its static method Reverse(): # Create an array...

By adding a ValidateSetAttribute to a variable, you can force it to accept only values that match a given set. Once you add this attribute in the...

With strong typing, you can limit a variable to only a certain data type such as String: [String]$a = 'Hello' By adding a...

To check for a valid IP-address, use the .NET Framework type System.Net.IPAddress and test whether the data can be converted into this format:...

To check for valid email addresses, you can use the .NET Framework type System.Net.Mail.MailAddress and test whether the data can be converted into...

To exit a function immediately, use the return statement. The next function expects a name (including wildcards) and lists all matching processes....

Want to quickly get a number of interesting details for any drive? Use the .NET System.IO.DriveInfo class like this: New-Object System.io.DriveInfo...

In PowerShell, you can access .NET methods directly so it is easy to add a ping functionality: $object = New-Object...

When writing a function that accepts parameters, you can strongly-type parameters so that an exception occurs when the user submits the wrong...

GUIDs are "Globally Unique Identifiers," which are so random that you can safely assume they are unique worldwide. GUIDs are used whenever...