C#

$session = new-pssession -configurationname microsoft.exchange -connectionuri http://exchangeserver.domain.com/powershell -auth kerberos -credential (get-credential)

  import-psession $session

using (PowerShell powerShell = PowerShell.Create())
                {
                    powerShell.Runspace = runspace;
                    string un = @"domain\username";
                    System.Security.SecureString pw = new System.Security.SecureString();
                    string password = "password";
                    foreach (char ch in password)
                    {
                        pw.AppendChar(ch);
                    }
                    PSCredential cred = new PSCredential(un, pw);
                    
                    string CONNECTION_URI = @"http://exchangeserver.com/powershell";
                    PSCommand psSession = new PSCommand();
                    psSession.AddCommand("$session = New-PSSession");
                    psSession.AddParameter("ConfigurationName", "Microsoft.Exchange");
                    psSession.AddParameter("ConnectionUri", new Uri(CONNECTION_URI));
                    psSession.AddParameter("Kerberos");
                    psSession.AddParameter("Credential", cred);
                                        psSession.AddParameter("AllowRedirection");

                    psSession.AddCommand("Import-PSSession");
                    psSession.AddParameter("$session");

                    psSession.AddCommand("Get-MailboxDatabaseCopyStatus");
                    psSession.AddParameter("databasename");
                    powerShell.Commands = psSession;
                    var results2 = powerShell.Invoke();
                    foreach (var item in results2)
                    {
                        MessageBox.Show(item.Members.ToString());
                    }
                }

string un = @"domain\username";
            System.Security.SecureString pw = new System.Security.SecureString();
            string password = "password";
            string databaseName = "databasename";
            string exchangeServerName = "http://exchangeserver.com/powershell";
            string microsoftSchemaName = "http://schemas.microsoft.com/powershell/Microsoft.Exchange";
            foreach (char ch in password)
            {
                pw.AppendChar(ch);
            }
            PSCredential cred = new PSCredential(un, pw);

            WSManConnectionInfo connectionInfo = new WSManConnectionInfo(new Uri(exchangeServerName), microsoftSchemaName, cred);
            connectionInfo.AuthenticationMechanism = AuthenticationMechanism.Kerberos;

            using (Runspace runspace = RunspaceFactory.CreateRunspace(connectionInfo))
            {
                using (PowerShell powershell = PowerShell.Create())
                {
                    powershell.AddCommand("Get-Mailboxdatabasecopystatus");
                    powershell.AddParameter("identity", databaseName);
                    powershell.AddCommand("select-object");
                    var props = new string[] { "name", "status" };
                    powershell.AddParameter("property", props);
                    runspace.Open();
                    powershell.Runspace = runspace;

                    Collection<PSObject> results = powershell.Invoke();

                    foreach (PSObject result in results)
                    {
                        MessageBox.Show(result.ToString());
                    }
                }
            }

XDocument document = XDocument.Parse(@"<?xml version=""1.0"" encoding=""utf-8""?>
<campaign xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" xmlns=""urn:nds:dyn:campaign:version02"" handle=""4329"" campaignId=""4329"" campaignType=""EPG"" startDateTime=""2015-01-15T10:07:51"" endDateTime=""2015-01-15T12:07:51"" lastModifiedDateTime=""2014-10-25T06:24:28"" amsEnabled=""false"">
  <contextExpression><![CDATA[(zoneId==176)&&((startTime==100)&&(endTime==1200))]]></contextExpression>
  <adContent>
    <contentInstance xsi:type=""ImageInstanceType"" language=""English"" imageType=""PNG"" height=""228"" width=""178"" epgResolution=""HD"">
      <contentInstanceRef>image.png</contentInstanceRef>
    </contentInstance>
  </adContent>
</campaign>");


XNamespace defaultNamespace = document.Root.Name.Namespace;
XName contextExpressionNodeName = defaultNamespace + "contextExpression";
XElement contextExpressionNode = document.Root.Element(contextExpressionNodeName);
string contextExpression = (string)contextExpressionNode;
Console.WriteLine(contextExpression);

// Output:
// (zoneId==176)&&((startTime==100)&&(endTime==1200))

((int)type).ToString();

((int)type).ToString()[0];