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(); } } }