Command/console exec in C#

ConsoleExec.cs

class ConsoleExec
{
    public string FileName { get; set; }
    public string Arguments { get; set; }

    public TextWriter StdOut { get; set; }
    public TextWriter StdErr { get; set; }

    public ConsoleExec()
    {
        StdOut = new StringWriter();
        StdErr = new StringWriter();
    }

    public ConsoleExec(string fileName, string arguments)
        : this()
    {
        FileName = fileName;
        Arguments = arguments;
    }

    public int Execute()
    {
        using (var process = new Process())
        {
            var psi = process.StartInfo;
            psi.RedirectStandardError = psi.RedirectStandardInput = psi.RedirectStandardOutput = true;
            psi.UseShellExecute = false;
            psi.CreateNoWindow = true;
            psi.FileName = FileName;
            psi.Arguments = Arguments;
            if (StdOut != null)
            {
                process.OutputDataReceived += delegate(object sender, DataReceivedEventArgs e)
                {
                    StdOut.WriteLine(e.Data);
                };
            }
            if (StdErr != null)
            {
                process.ErrorDataReceived += delegate(object sender, DataReceivedEventArgs e)
                {
                    StdErr.WriteLine(e.Data);
                };
            }
            process.Start();
            process.BeginOutputReadLine();
            process.BeginErrorReadLine();
            process.WaitForExit();
            return process.ExitCode;
        }
    }

    static void execTest()
    {
        string filename = "cmd.exe";
        string args = "/c dir /s";

        var exec = new ConsoleExec(filename, args);

        int exitCode = exec.Execute();
        Debug.WriteLine("exit code - " + exitCode);
        Debug.WriteLine("stdOut - " + exec.StdOut);
        Debug.WriteLine("stdErr - " + exec.StdErr);

    }
}