public Form2()
{
Thread.CurrentThread.Name = "UIThread";
var syncctx = new WindowsFormsSynchronizationContext();
var btnRunErrOnMain = new Button();
btnRunErrOnMain.Text = "Run (Err on Main)";
btnRunErrOnMain.Click += (sender, args) => {
FrmDlg dlg = new FrmDlg();
throw new Exception("Error en el Form. Thread #" + Thread.CurrentThread.Name);
};
var btnRun = new Button();
btnRun.Text = "Run";
btnRun.Click += (sender, args) => {
FrmDlg dlg = new FrmDlg();
dlg.Confirm = (next, exHandler) => {
var t = new Thread(() => {
try {
int i = 0;
while (true) {
i++;
if (i == 10000000) {
MessageBox.Show("Running on Thread #" + Thread.CurrentThread.Name);
Die("Error interno del script. on thread #" + Thread.CurrentThread.Name);
}
}
MessageBox.Show("Exit loop");
syncctx.Post(ui => { next(); }, null);
}
catch (Exception ex) {
syncctx.Post(ui => { exHandler(ex); }, null);
}
});
t.Name = "Foo";
t.Start();
};
dlg.Cancel = delegate {
MessageBox.Show("Cancel");
};
dlg.Show();
};
Controls.Add(btnRun);
btnRunErrOnMain.Top = btnRun.Top + 30;
Controls.Add(btnRunErrOnMain);
}
private static void StartIpcPipe()
{
//todo: impl a set of IPC APIs to perform some cmds. eg.Pause/Resume, Quit...
//todo: Temporay IPC mechanism.
var synCtx = new WindowsFormsSynchronizationContext();//note: won't work with `SynchronizationContext.Current`
var pipeThread = new Thread(() =>
{
while (true)
{
using (var server = new System.IO.Pipes.NamedPipeServerStream("WGestures_IPC_API"))
{
server.WaitForConnection();
Debug.WriteLine("Clien Connected");
using (var reader = new StreamReader(server))
{
var cmd = reader.ReadLine();
Debug.WriteLine("Pipe CMD=" + cmd);
if (cmd == "ShowSettings")
{
synCtx.Post((s) =>
{
Debug.WriteLine("Thread=" + Thread.CurrentThread.ManagedThreadId);
ShowSettings();
}, null);
}
}
}
}
}) { IsBackground = true };
pipeThread.Start();
}
public FrmMain() {
this.InitializeComponent();
Closed += (s, e) => { Environment.Exit(0); };
Thread.CurrentThread.Name = "UIThread";
base.IsMdiContainer = false;
var btnNewFrmST = new Button {
Text = "New Form (Main Thread)",
Width = 400
};
var prevBtn = btnNewFrmST;
var btnNewFrmMT = new Button {
Text = "New form does work on its own Thread (The app remains responsive).",
Top = prevBtn.Top + prevBtn.Height + 10,
Width = prevBtn.Width
};
prevBtn = btnNewFrmMT;
var btnNewFrmTsk = new Button {
Text = "New Form (Task)",
Top = prevBtn.Top + prevBtn.Height + 10,
Width = prevBtn.Width
};
prevBtn = btnNewFrmTsk;
var btnNewFrmWork = new Button {
Text = "New form does work on the UI Thread (Hangs the app).",
Top = prevBtn.Top + prevBtn.Height + 10,
Width = prevBtn.Width
};
prevBtn = btnNewFrmWork;
var btnNewFrmWorkAsync = new Button {
Text = "New Form (Does Async work...)",
Top = prevBtn.Top + prevBtn.Height + 10,
Width = prevBtn.Width
};
// Controls.Add(btnNewFrmST);
Controls.Add(btnNewFrmMT);
// Controls.Add(btnNewFrmTsk);
Controls.Add(btnNewFrmWork);
// Controls.Add(btnNewFrmWorkAsync);
var syncctx = new WindowsFormsSynchronizationContext();
btnNewFrmMT.Click += (sender, args) => {
Thread t = new Thread(()=> {
while(true) {
// Shows a new form
syncctx.Post(ui => {
// MessageBox.Show("SyncCtx running on thread #" + Thread.CurrentThread.Name);
var frm = new FrmEx();
try {
frm.Show();
}
catch (Exception ex) {
MessageBox.Show($"Catched inside thread ctx.\n{ex.Message}");
}
},
null);
// Simulates some work.
for(int i=0; i < 10*1000; i++){
WriteLine($"Doing work on #{Thread.CurrentThread.Name} => {i}");
Thread.Sleep(0);
}
Application.DoEvents();
}
});
t.Name = $"#{new Random().Next()}";
t.Start();
};
btnNewFrmST.Click += (sender, args) => {
var frm = new FrmEx();
frm.Show();
};
btnNewFrmTsk.Click += (sender, args) => {
Task<int> tsk = new Task<int>(()=> {
int result;
try {
MessageBox.Show("tsk");
var frm = new FrmEx();
frm.ShowDialog();
result = 0;
}
catch {
MessageBox.Show("catched");
result = 1;
}
return result;
});
Action<Task<int>> onErr = delegate(Task<int> t) {
MessageBox.Show(t.Exception.Message);
};
tsk.ContinueWith(onErr, TaskContinuationOptions.OnlyOnFaulted);
tsk.Start();
};
btnNewFrmWork.Click += (sender, args) => {
var frm = new FrmEx();
frm.Show();
int count = 0;
while (true) {
count++;
if (count == 10000000) {
Thread.Sleep(1000);
count = 0;
}
WriteLine($"Doing work on #{Thread.CurrentThread.Name} => {count}");
}
};
btnNewFrmWorkAsync.Click += (sender, args) => {
var frm = new FrmEx();
frm.Show();
int count = 0;
Thread t = new Thread(() => {
while (true) {
count++;
if (count == 10000000) {
Thread.Sleep(1000);
count = 0;
}
}
});
t.Start();
};
}