launching a powershell script from visual studio 2010

PowerShellInstance.AddScript("Add-pssnapin Microsoft.Exchange.Management.PowerShell.E2010")
PowerShellInstance.AddScript(ScriptName)
PowerShellInstance.AddParameter("....", "some value")

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 Using PowerShellInstance As PowerShell = PowerShell.Create()
            PowerShellInstance.AddScript(CommandString)
            Dim outputCollection As New PSDataCollection(Of PSObject)()
            'outputCollection.DataAdded += outputCollection_DataAdded

            ' the streams (Error, Debug, Progress, etc) are available on the PowerShell instance.
            ' we can review them during or after execution.
            ' we can also be notified when a new item is written to the stream (like this):
            'PowerShellInstance.Streams.[Error].DataAdded += Error_DataAdded
            AddHandler PowerShellInstance.Streams.Error.DataAdded, AddressOf Error_DataAdded
            Try
                Dim result As IAsyncResult = PowerShellInstance.BeginInvoke(Of PSObject, PSObject)(Nothing, outputCollection)
                Console.Write("Waiting for pipeline to finish")
                While result.IsCompleted = False
                    Console.Write(".")
                    Threading.Thread.Sleep(1000)
                End While
                Console.WriteLine(".")
                Console.WriteLine("Execution has stopped. The pipeline state: " + PowerShellInstance.InvocationStateInfo.State)

                For Each outputItem As PSObject In outputCollection
                    Console.WriteLine(outputItem.BaseObject.GetType().FullName)
                    Console.WriteLine(outputItem.BaseObject.ToString())
                Next
            Catch ex As Exception
                Console.WriteLine("Exception is " & ex.Message)
            End Try

        End Using

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  Private Sub Error_DataAdded(sender As Object, e As DataAddedEventArgs)
        Dim records = DirectCast(sender, PSDataCollection(Of ErrorRecord))
        ' do something when an error is written to the error stream
        Console.WriteLine(records(e.Index).ToString())
    End Sub

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using System;
using System.Management.Automation;

namespace PowerShellExecutionSample
{
    /// <summary>
    /// Test class object to instantiate from inside PowerShell script.
    /// </summary>
    public class TestObject
    {
        /// <summary>
        /// Gets or sets the Name property
        /// </summary>
        public string Name { get; set; }
    }

    /// <summary>
    /// Test static class to invoke from inside PowerShell script.
    /// </summary>
    public static class TestStaticClass
    {
        /// <summary>
        /// Sample static method to call from inside PowerShell script.
        /// </summary>
        /// <returns>String message</returns>
        public static string TestStaticMethod()
        {
            return "Hello, you have called the test static method.";
        }
    }

    /// <summary>
    /// Provides PowerShell script execution examples
    /// </summary>
    public class PowerShellExecutor
    {
        /// <summary>
        /// Sample execution scenario 3: Namespace test
        /// </summary>
        /// <remarks>
        /// Executes a PowerShell script synchronously and utilizes classes in the callers namespace.
        /// </remarks>
        public void ExecuteSynchronouslyNamespaceTest()
        {
            using (var powerShellInstance = PowerShell.Create())
            {
                // add a script that creates a new instance of an object from the caller's namespace
                powerShellInstance.AddScript("$t = new-object PowerShellExecutionSample.TestObject;" +
                                             "$t.Name = 'created from inside PowerShell script'; $t;" +
                                             "$message = [PowerShellExecutionSample.TestStaticClass]::TestStaticMethod(); $message");

                // invoke execution on the pipeline (collecting output)
                var psOutput = powerShellInstance.Invoke();

                // loop through each output object item
                foreach (var outputItem in psOutput)
                {
                    if (outputItem != null)
                    {
                        if (outputItem.BaseObject is TestObject)
                        {
                            var testObj = outputItem.BaseObject as TestObject;
                            Console.WriteLine(testObj.Name);
                        }
                    }
                }
            }
        }
    }
}

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