void HandleExited()
{
_comm.Dispose();
IsAlive = false;
WindowHandle = IntPtr.Zero;
State = "Designer process crashed";
}
public void Start(string targetExe, string initialXaml, string sourceAssembly)
{
if (_proc != null)
{
_proc.Exited -= OnExited;
try
{
_comm?.Dispose();
_proc.Kill();
}
catch { }
HandleExited();
State = "Restarting...";
}
var msg = new InitMessage(Path.GetFullPath(targetExe), initialXaml, sourceAssembly);
var exe = typeof(ProcessHost).Assembly.GetModules()[0].FullyQualifiedName;
_proc = new Process()
{
StartInfo = new ProcessStartInfo(exe, "--hosted")
{
UseShellExecute = false,
RedirectStandardInput = true,
RedirectStandardOutput = true,
RedirectStandardError = true,
CreateNoWindow = true
},
EnableRaisingEvents = true
};
_proc.Exited += OnExited;
try
{
_proc.Start();
State = "Launching designer process...";
_comm = new CommChannel(_proc.StandardOutput.BaseStream, _proc.StandardInput.BaseStream);
_comm.OnMessage += OnMessage;
_comm.Start();
_comm.SendMessage(msg);
}
catch (Exception e)
{
State = e.ToString();
HandleExited();
}
IsAlive = true;
}