Getting verbose loggin from Powershell command when it is run from c#?

Hi,

I made a code to run powershell command from C# to collect list of mailboxes from office 365.

The command works fine to collect the get-mailbox.

I want to write verbose logging to a text file when the command is being executed.

I made code as below, but it does not work, rather I do not know how to capture verbose logging. Please help me on the same.

Runspace runspace = RunspaceFactory.CreateRunspace(); 
PowerShell powershell = PowerShell.Create(); 
PSCommand command = new PSCommand(); 
command.AddCommand("New-PSSession"); 
command.AddParameter("ConfigurationName", "Microsoft.Exchange"); 
command.AddParameter("ConnectionUri", new Uri("https://ps.outlook.com/powershell/;)); 
command.AddParameter("Credential", credential); 
command.AddParameter("Authentication", "Basic"); 


powershell.Commands = command; 


runspace.Open(); 

powershell.Runspace = runspace; 

Collection<PSSession> result = powershell.Invoke<PSSession>(); 

powershell = PowerShell.Create(); 
command = new PSCommand(); 
command.AddCommand("Set-Variable"); 
command.AddParameter("Name", "ra"); 
command.AddParameter("Value", result[0]); 
powershell.Commands = command; 
powershell.Runspace = runspace; 
powershell.Invoke(); 


powershell = PowerShell.Create(); 
command = new PSCommand(); 
const string getverbose = "("`$verbosepreference='continue'; write-verbose 42")"; 
command.AddScript(string.Format(getverbose)); 
powershell.Commands = command; 
powershell.Runspace = runspace; 
powershell.Invoke(); 


powershell = PowerShell.Create(); 
command = new PSCommand(); 
const string getMailBoxScript = "get-mailbox"; 
command.AddScript(string.Format(getMailBoxScript)); 
powershell.Commands = command; 
powershell.Runspace = runspace; 
powershell.Invoke(); 

I already checked http://stackoverflow.com/questions/1146575/how-to-capture-a-powershell-cmdlets-verbose-output-when-the-cmdlet-is-programma, but i do not get much lead from it.

Thanlk you in advance.