Public Overloads Function Run( _
   ByVal ParamArray arguments() As String _
) As Integer

public int Run( 
   params string[] arguments
)

using (AssemblyRunner runner = new AssemblyRunner(Exe))
{
    StringWriter wtr = new StringWriter();
    StringWriter err = new StringWriter();
    ProcessOutputEventHandler handler =
            delegate(object o, ProcessOutputEventArgs e)
            { if (e.Error) err.WriteLine(e.Data); else wtr.WriteLine(e.Data); };

    runner.OutputReceived += handler;

    Assert.AreEqual(1, runner.Run("command-line-argrument"));
    Assert.AreEqual("std-err", err.ToString().Trim());

    StringReader rdr = new StringReader(wtr.ToString());
    Assert.AreEqual("WorkingDirectory = " + Environment.CurrentDirectory, rdr.ReadLine());
    Assert.AreEqual("argument[0] = command-line-argrument", rdr.ReadLine());
    Assert.AreEqual("std-input:", rdr.ReadLine());
    Assert.AreEqual(null, rdr.ReadLine());
}

Using runner As New AssemblyRunner(Exe)
    Dim wtr As New StringWriter()
    Dim err As New StringWriter()
    Dim handler As ProcessOutputEventHandler = Function(o As Object, e As ProcessOutputEventArgs) Do
        If e.[Error] Then
            err.WriteLine(e.Data)
        Else
            wtr.WriteLine(e.Data)
        End If
    End Function

    runner.OutputReceived += handler

    Assert.AreEqual(1, runner.Run("command-line-argrument"))
    Assert.AreEqual("std-err", err.ToString().Trim())

    Dim rdr As New StringReader(wtr.ToString())
    Assert.AreEqual("WorkingDirectory = " + Environment.CurrentDirectory, rdr.ReadLine())
    Assert.AreEqual("argument[0] = command-line-argrument", rdr.ReadLine())
    Assert.AreEqual("std-input:", rdr.ReadLine())
    Assert.AreEqual(Nothing, rdr.ReadLine())
End Using