C#

string scriptText = @"$pw = convertto-securestring -AsPlainText -Force -String '<password>'; $cred = new-object -typename System.Management.Automation.PSCredential -argumentlist '<domain>\<username>', $pw;  $session = new-pssession -ConfigurationName Microsoft.Exchange -ConnectionUri '<server url>/powershell' -credential $cred; import-pssession $session; Set-ExecutionPolicy bypass -confirm:$false -force; $pic = ([System.IO.File]::ReadAllBytes('" + <picture file name> + "')); set-userphoto -identity <username> -picturedata $pic -domaincontroller '<dc fqdn>' -confirm:$false;";

               
                runExchangeShellScript(scriptText);

private string runExchangeShellScript(string scriptText)
        {
            
            Runspace runspace = RunspaceFactory.CreateRunspace();

            // open it
            runspace.Open();

            // create a pipeline and feed it the script text
            Pipeline pipeline = runspace.CreatePipeline();
            pipeline.Commands.AddScript(scriptText);
            RunspaceInvoke runSpaceInvoker = new RunspaceInvoke(runspace);
            runSpaceInvoker.Invoke("Set-ExecutionPolicy Unrestricted");

            // add an extra command to transform the script output objects into nicely formatted strings
            // remove this line to get the actual objects that the script returns. For example, the script
            // "Get-Process" returns a collection of System.Diagnostics.Process instances.
            //pipeline.Commands.Add("Out-String");

            // execute the script
            Collection<PSObject> results = null;
            try
            {
                results = pipeline.Invoke();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.InnerException + " - " + ex.Message + " - " + ex.Source + " - " + ex.StackTrace + " - " + ex.TargetSite + " - " + ex.Data);
                return "";
            }


            // close the runspace
            runspace.Close();

            // convert the script result into a single string
            StringBuilder stringBuilder = new StringBuilder();
            foreach (PSObject obj in results)
            {
                stringBuilder.AppendLine(obj.ToString());
            }

            // return the results of the script that has
            // now been converted to text
            return stringBuilder.ToString();
        }

private void LoadFileNames(string folder, string extension, ListBox lb)
    {
    string[] files = Directory.GetFiles(folder, "*" + extension);
    lb.DataSource = files.Select(f => Path.GetFileNameWithoutExtension(f)).ToList();
    }

LoadFileNames(@"D:\Temp", ".txt", myListBox);

string greetings = "Hello!";
private void MyMethod(greetings g)
   {

string greetings = "Hello!";
private void MyMethod(string g)
   {
   ...
   }
   ...
   MyMethod(greetings);

using System.Windows.Forms;

<MenuItem ContextMenu="{StaticResource MyContextMenu}">
    <MenuItem/>
    <MenuItem/>
    <MenuItem/>
</MenuItem>

Gilbert Consellado wrote:

is there way to fix the exception without removing the parameter i added to the class

var classObject = new ClassObject();

var classObject = new ClassObject(myParameterValue);

public classObject(SomeClass parameterName)
   {
   ...

public classObject()
   {
   ...

var classObject = new ClassObject(parameterValue);
dictionary.Add(id, new MemoryStream());
///then add the object stream here to the created storage on the dictionary

var retriveObject = dictionary[id] as ClassObject; //The runtime error while happen here

    Dictionary<int, MemoryStream> dictionary = new Dictionary<int, MemoryStream>();
    var classObject = new ClassObject("hello");
    int id = 666;
    dictionary.Add(id, new MemoryStream());
    var retriveObject = dictionary[id] as ClassObject;
    }


public class ClassObject : MemoryStream
    {
    public ClassObject(string s) { }
    }