Daniel Cazzulino's Blog : How to use C# typeof in Powershell

PS C:\> [System.Type]::GetType("System.Enum") 


IsPublic IsSerial Name                                     BaseType  
-------- -------- ----                                     --------  
True     True     Enum                                     System.ValueType 


PS C:\> typeof System.Enum 


IsPublic IsSerial Name                                     BaseType  
-------- -------- ----                                     --------  
True     True     Enum                                     System.ValueType 

using System.Globalization;
using System.Management.Automation;

namespace Clarius.PowerShell
{
    [Cmdlet(VerbsCommon.Get, "Type")]
    public class GetTypeCommand : Cmdlet
    {
        private string typeName;

        [Parameter(Mandatory=true, Position=0, HelpMessageResourceId="Parameter_TypeName")]
        public string TypeName
        {
            get { return typeName; }
            set { typeName = value; }
        }

        protected override void ProcessRecord()
        {
            string name = typeName;
            if (name.StartsWith("[")) name = name.Substring(1);
            if (name.EndsWith("]")) name = name.Substring(0, name.Length - 1);

            WriteObject(new TypeNameConverter().ConvertFrom(name, typeof(Type), CultureInfo.CurrentCulture, true));
        }
    }
}

set-alias typeof Get-Type