Thread and GUI : Thread and GUI « Thread « C# / C Sharp

Home
C# / C Sharp
1.2D Graphics
2.Class Interface
3.Collections Data Structure
4.Components
5.Data Types
6.Database ADO.net
7.Date Time
8.Design Patterns
9.Development Class
10.Event
11.File Stream
12.Generics
13.GUI Windows Form
14.Internationalization I18N
15.Language Basics
16.LINQ
17.Network
18.Office
19.Reflection
20.Regular Expressions
21.Security
22.Services Event
23.Thread
24.Web Services
25.Windows
26.Windows Presentation Foundation
27.XML
28.XML LINQ
C# / C Sharp » Thread » Thread and GUIScreenshots 
Thread and GUI
Thread and GUI

/*
Professional Windows GUI Programming Using C#
by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury, 
   Zach Greenvoss, Shripad Kulkarni, Neil Whitlow

Publisher: Peer Information
ISBN: 1861007663
*/
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Threading;

namespace Wrox.WindowsGUIProgramming.Chapter9
{
    /// <summary>
    /// Summary description for Form1.
    /// </summary>
    /// 
    struct _threadstart
    {
        public ThreadStart threadstart;
        public DateTime dt;
    }

    public class frmWasteTime : System.Windows.Forms.Form
    {
        private System.Windows.Forms.Button butWasteTime;
        private System.Windows.Forms.TextBox textBox1;
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;
        private System.Windows.Forms.ListBox lbThreads;
        private System.Windows.Forms.TextBox txtNoOfThreads;
        private System.Windows.Forms.Button btThreadStart;

        private System.IAsyncResult m_EndInvoke = null;

        public frmWasteTime()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();

            //
            // TODO: Add any constructor code after InitializeComponent call
            //
            this.Show();
            //TakeTime();
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Disposebool disposing )
        {
            ifdisposing )
            {
                if (components != null
                {
                    components.Dispose();
                }
            }
            base.Disposedisposing );
        }

        #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.butWasteTime = new System.Windows.Forms.Button();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.lbThreads = new System.Windows.Forms.ListBox();
            this.txtNoOfThreads = new System.Windows.Forms.TextBox();
            this.btThreadStart = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // butWasteTime
            // 
            this.butWasteTime.Location = new System.Drawing.Point(8832);
            this.butWasteTime.Name = "butWasteTime";
            this.butWasteTime.TabIndex = 0;
            this.butWasteTime.Text = "Waste Time";
            this.butWasteTime.Click += new System.EventHandler(this.butWasteTime_Click);
            // 
            // textBox1
            // 
            this.textBox1.Location = new System.Drawing.Point(18424);
            this.textBox1.Name = "textBox1";
            this.textBox1.TabIndex = 1;
            this.textBox1.Text = "";
            // 
            // lbThreads
            // 
            this.lbThreads.Location = new System.Drawing.Point(864);
            this.lbThreads.Name = "lbThreads";
            this.lbThreads.Size = new System.Drawing.Size(280277);
            this.lbThreads.TabIndex = 2;
            // 
            // txtNoOfThreads
            // 
            this.txtNoOfThreads.Location = new System.Drawing.Point(8352);
            this.txtNoOfThreads.Name = "txtNoOfThreads";
            this.txtNoOfThreads.TabIndex = 3;
            this.txtNoOfThreads.Text = "";
            // 
            // btThreadStart
            // 
            this.btThreadStart.Location = new System.Drawing.Point(128352);
            this.btThreadStart.Name = "btThreadStart";
            this.btThreadStart.Size = new System.Drawing.Size(16023);
            this.btThreadStart.TabIndex = 4;
            this.btThreadStart.Text = "Start";
            this.btThreadStart.Click += new System.EventHandler(this.btThreadStart_Click);
            // 
            // frmWasteTime
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(513);
            this.ClientSize = new System.Drawing.Size(296390);
            this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                          this.btThreadStart,
                                                                          this.txtNoOfThreads,
                                                                          this.lbThreads,
                                                                          this.textBox1,
                                                                          this.butWasteTime});
            this.Name = "frmWasteTime";
            this.Text = "Lock Form";
            this.Paint += new System.Windows.Forms.PaintEventHandler(this.painting);
            this.ResumeLayout(false);

        }
        #endregion

        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main() 
        {
            Application.Run(new frmWasteTime());
        }

        private void TakeTime()
        {
            int j = 0;
            for(int i=0;i<320-j;i++)
            {
                System.Diagnostics.Debug.Write(i);
            }
            j++;

        }

        private void butWasteTime_Click(object sender, System.EventArgs e)
        {
            IAsyncResult m_EndInvoke2 = null;
            ThreadStart threadstart = new ThreadStart(TakeTime);
            m_EndInvoke = threadstart.BeginInvoke(new AsyncCallback(MethodBeginInvoke), String.Copy("test"));

            ThreadStart threadstart2 = new ThreadStart(TakeTime);
            m_EndInvoke2 = threadstart.BeginInvoke(new AsyncCallback(MethodBeginInvoke)null);

            //m_EndInvoke.AsyncWaitHandle.WaitOne();
            threadstart.EndInvoke(m_EndInvoke);
            threadstart.EndInvoke(m_EndInvoke2);

            /*while(true)
            {
                if(m_EndInvoke.IsCompleted)
                    MessageBox.Show("finally!!!");
                    break;
            }*/
        }

        private void MethodBeginInvoke(System.IAsyncResult ar)
        {
            if(ar.CompletedSynchronously)
              MessageBox.Show("TakeTime() called synchronously");   
            else
              MessageBox.Show("TakeTime() called asynchronously");  
        }

        protected override void OnPaint(PaintEventArgs pe)
        {
            System.Diagnostics.Debug.Write("Paint event called");
            
        }

        private void painting(object sender, System.Windows.Forms.PaintEventArgs e)
        {
            System.Diagnostics.Debug.Write("Paint event called");
        }

        //System.Threading.ThreadStart[] threads;
        //DateTime[] dateTimeThread;

        _threadstart[] th;

        DateTime dtStart;
        DateTime dtEnd;
        private void btThreadStart_Click(object sender, System.EventArgs e)
        {
            
            th = new _threadstart[Convert.ToInt32(txtNoOfThreads.Text)];
            //threads = (ThreadStart[])Array.CreateInstance(typeof(ThreadStart), Convert.ToInt16(txtNoOfThreads.Text));
            //dateTimeThread = (DateTime[])Array.CreateInstance(typeof(DateTime), threads.Length);

            dtStart = DateTime.Now;
            for(int i = 0; i < th.Length; i++)
            {
                th[i].threadstart = new ThreadStart(TakeTime);
                th[i].threadstart.BeginInvoke(new AsyncCallback(ThreadFinished), i);
                th[i].dt = DateTime.Now;
            }
            /*while(true)
            {
                for(int i = 0; i < threads.Length; i++)
                {
                    if((threads[i].ThreadState == System.Threading.ThreadState.Suspended) && finished[i].Equals(false))
                    {
                        //put something into the listbox
                        lbThreads.Items.Insert(i, "Thread "+i+" finished - "+(DateTime.Now.Subtract(dateTimeThread[i])));
                        finished[i] = true;
                    }
                    Refresh();
                }
            }*/
        }

        void FinalCallback(string blank)
        {
            dtEnd = DateTime.Now.Subtract(new TimeSpan(dtStart.Ticks));
            lbThreads.Items.Add("Total Thread Time: "+((dtEnd.Minute*60)+dtEnd.Second).ToString()+" seconds");
            lbThreads.Items.Add("Average Thread Time: "+(((dtEnd.Minute*60)+dtEnd.Second)/th.Length)+" seconds");
        }
        void UpdateListbox(string listboxText)
        {
             lbThreads.Items.Add(listboxText);
        }

        delegate void ItemAdd(string item);
        private void ThreadFinished(IAsyncResult ar)
        {
            ItemAdd ia = new ItemAdd(UpdateListbox);
            ItemAdd ib = new ItemAdd(FinalCallback);

            int i = (int)ar.AsyncState;
            string state = "Thread "+(i+1)+" finished - "+(DateTime.Now.Subtract(th[i].dt)).ToString();
            //put something into the listbox
            if(lbThreads.InvokeRequired)
            {
                lbThreads.Invoke(ia, new Object[] {state});
            }
            else
            {
                lbThreads.Items.Add(state);
            }
            if(i==(th.Length-1)) lbThreads.Invoke(ib, new Object[]{""});
        }
    }
}


           
       
Related examples in the same category
1.Demonstrates hiding a form and then doing background processing in a second threadDemonstrates hiding a form and then doing background processing in a second thread
java2s.com  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.