Waiting Processed Cancelable ShowDialog (Release 2)
namespace Test
{
using System;
using System.Windows.Forms;
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new MainForm());
}
}
}
namespace Test
{
using System;
using System.Threading;
using System.Windows.Forms;
using Microshaoft;
partial class MainForm
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(119, 74);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(75, 23);
this.button1.TabIndex = 0;
this.button1.Text = "button1";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// MainForm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(282, 253);
this.Controls.Add(this.button1);
this.Name = "MainForm";
this.Text = "MainForm";
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.Button button1;
}
public partial class MainForm : Form
{
public MainForm()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
var r = TaskProcesserHelper.ProcessWaitingShowDialog40
(
this
, new ProcessWaitingCancelableDialog()
, () =>
{
Thread.Sleep(5 * 1000);
//throw new Exception();
}
, () =>
{
Console.WriteLine("Finished");
}
, (x) =>
{
Console.WriteLine("Caught Exception: {0}", x);
}
);
Console.WriteLine(r);
}
}
}
namespace Microshaoft
{
using System;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
public static class TaskProcesserHelper
{
public static int ProcessWaitingShowDialog
(
IWin32Window ownerWindow
, Func<Form> onWaitingDialogFactoryFunc
, Action onProcessAction = null
, Action onProcessedAction = null
, Action<Exception> onCaughtExceptionProcessAction = null
)
{
var dialogForm = onWaitingDialogFactoryFunc();
return
ProcessWaitingShowDialog
(
ownerWindow
, dialogForm
, onProcessAction = null
, onProcessedAction = null
, onCaughtExceptionProcessAction = null
);
}
public static int ProcessWaitingShowDialog40
(
IWin32Window ownerWindow
, Form dialogForm
, Action onProcessAction = null
, Action onProcessedAction = null
, Action<Exception> onCaughtExceptionProcessAction = null
)
{
var r = 1;
Task<DialogResult> task1 = Task.Factory.StartNew<DialogResult>
(
() =>
{
return dialogForm.ShowDialog();
}
);
Task task2 = Task.Factory.StartNew
(
() =>
{
try
{
//
onProcessAction();
r = 0;
}
catch (Exception e)
{
r = -1;
if (onCaughtExceptionProcessAction != null)
{
onCaughtExceptionProcessAction(e);
}
}
finally
{
TrySafeInvokeFormClose
(
dialogForm
, onCaughtExceptionProcessAction
);
}
try
{
onProcessedAction();
}
catch (Exception e)
{
//r = -1;
onCaughtExceptionProcessAction(e);
}
finally
{
TrySafeInvokeFormClose(dialogForm, onCaughtExceptionProcessAction);
}
}
);
Task.WaitAny(task1, task2);
//DialogResult dialogResult = await task;
return r;
}
public static int ProcessWaitingShowDialog
(
IWin32Window ownerWindow
, Form dialogForm
, Action onProcessAction = null
, Action onProcessedAction = null
, Action<Exception> onCaughtExceptionProcessAction = null
)
{
//var wait = new AutoResetEvent(false);
int r = 1;
if (onProcessAction != null)
{
new Thread
(
new ThreadStart
(
() =>
{
//wait.WaitOne();
Thread.Sleep(10);
try
{
//
onProcessAction();
r = 0;
}
catch (Exception e)
{
r = -1;
if (onCaughtExceptionProcessAction != null)
{
onCaughtExceptionProcessAction(e);
}
}
finally
{
TrySafeInvokeFormClose
(
dialogForm
, onCaughtExceptionProcessAction
);
}
try
{
onProcessedAction();
}
catch (Exception e)
{
//r = -1;
onCaughtExceptionProcessAction(e);
}
finally
{
TrySafeInvokeFormClose(dialogForm, onCaughtExceptionProcessAction);
}
}
)
).Start();
//wait.Set();
if (r != 0)
{
dialogForm.ShowDialog(ownerWindow);
}
}
return r;
}
private static bool TrySafeInvokeFormClose
(
Form dialogForm
, Action<Exception> onCaughtExceptionProcessAction
)
{
bool r = false;
try
{
if
(
dialogForm.IsHandleCreated
&& !dialogForm.IsDisposed
)
{
dialogForm.Invoke
(
new Action
(
() =>
{
//try
{
if
(
dialogForm.IsHandleCreated
&& !dialogForm.IsDisposed
)
{
dialogForm.Close();
}
//throw new Exception("理论上不应该被外侧 try catch 捕获?!?!?!?!?!");
}
/// catch (Exception e)
/// {
/// r = false;
/// if (onCaughtExceptionProcessAction != null)
/// {
/// onCaughtExceptionProcessAction(e);
/// }
/// }
}
)
);
Thread.Sleep(10);
}
r = true;
}
catch (Exception e)
{
r = false;
if (onCaughtExceptionProcessAction != null)
{
onCaughtExceptionProcessAction(e);
}
}
return r;
}
public static int ProcessWaitingCancelable
(
Func<AutoResetEvent> onWaitFactoryFunc
, Action onProcessAction
, Action onProcessedAction
, Action<Exception> onCaughtExceptionProcessAction
)
{
var wait = onWaitFactoryFunc();
return
ProcessWaitingCancelable
(
wait
, onProcessAction
, onProcessedAction
, onCaughtExceptionProcessAction
);
}
public static int ProcessWaitingCancelable
(
AutoResetEvent wait
, Action onProcessAction
, Action onProcessedAction
, Action<Exception> onCaughtExceptionProcessAction
)
{
int r = 1; //Cancel
new Thread
(
new ThreadStart
(
() =>
{
try
{
onProcessAction();
r = 0;
onProcessedAction();
}
catch (Exception e)
{
r = -1;
onCaughtExceptionProcessAction(e);
}
finally
{
wait.Set();
}
}
)
).Start();
wait.WaitOne();
return r;
}
}
}
namespace Microshaoft
{
using System;
using System.Drawing;
using System.ComponentModel;
using System.Threading;
using System.Windows.Forms;
public class ProcessWaitingCancelableDialog : Form
{
private IContainer components = null;
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
private void InitializeComponent()
{
button1 = new Button();
SuspendLayout();
//
// button1
//
button1.DialogResult = DialogResult.Cancel;
button1.Location = new Point(98, 158);
button1.Name = "button1";
button1.Size = new Size(75, 23);
button1.TabIndex = 0;
button1.Text = "取消(&C)";
button1.UseVisualStyleBackColor = true;
//
// MainForm
//
AutoScaleDimensions = new SizeF(8F, 16F);
AutoScaleMode = AutoScaleMode.Font;
CancelButton = button1;
ClientSize = new Size(282, 253);
ControlBox = false;
Controls.Add(button1);
///Name = "MainForm";
///Text = "MainForm";
ResumeLayout(false);
}
private Button button1;
public Button CancelWaitButton
{
get
{
return button1;
}
}
public ProcessWaitingCancelableDialog()
{
InitializeComponent();
button1.Click += button1_Click;
}
void button1_Click(object sender, EventArgs e)
{
button1.Click -= button1_Click;
Close();
}
}
}
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