I'm looking to run some powershell scripts via automation. Something like:

IList errors;
Collection<PSObject> res = null;
using (RunspaceInvoke rsi = new RunspaceInvoke())
{
    try
    {
        res = rsi.Invoke(commandline, null, out errors);
    }
    catch (Exception ex)
    {
        LastErrorMessage = ex.ToString();
        Debug.WriteLine(LastErrorMessage);
        return 1;
    }
}

the problem I'm facing is that if my script uses cmdlets such as write-host the above throws an System.Management.Automation.CmdletInvocationException -

Cannot invoke this function because the current host does not implement it.

What are some good options for getting around this problem?