How to call custom cmdlet’s from PowerShell Script/How to create a custom cmdlet project in PowerShell

·         Open visual Studio

·         Create a Class library project

·         Add a new class file

The file will have be inheriting “System.Management.Automation.Cmdlet” .The file will also decorate the class file with the following verb “[Cmdlet(VerbsCommon.Add, "NameOfYourFunctionality")]”

Some sample code showing a sample powershell file

    [Cmdlet(VerbsCommon.Add, " NameOfYourFunctionality ")]

    public class MyClass : System.Management.Automation.Cmdlet

    {

        [Parameter(Position = 0, Mandatory = true)]

  public string para1;

   // define more parameters here

protected override void ProcessRecord()

        {

              //write your functionality here

 }

Add more class files if you need to build your functionality

·         Add a new installer file

Add the following code to the installer class

    [RunInstaller(true)]

    public class Installer : PSSnapIn

{

       public override string Name

        {

            get

            {

                return "NameWithWhichYouWantToRegisterWhenYouImportusing Add-PSSnapin";

            }

        }

}

}

·         Strong sign your assembly

·         In order to call this custom cmdlet from a script file you may have to first register this assembly in the GAC using the GACUTIL , once that is done you can use this custom cmdlet using the following commands in the script file

Add-PSSnapin NameWhichYoudefinedInTheNamePropertyOfinstallerFile -ErrorAction "Stop"