how to write this program

  • Thread starter Thread starter Afei
  • Start date Start date
A

Afei

hi,
I want to write a program that every some specific time(say, 15
minutes) do something. But i am out of mind how to do it? Should i
use threads or some other technologies?

Thanks.
 
Afei said:
hi,
I want to write a program that every some specific time(say, 15
minutes) do something. But i am out of mind how to do it? Should i
use threads or some other technologies?
Click to expand...

Whether or not you use a separate thread depends on what else the program
needs to do. Does the program need to respond to input or do other
processing during the 15 minutes that it is waiting. My approach would
probably be to kick off a thread that sleeps for 15 mintues, wakes up and
does something and then goes back to sleep. Allow for the ability to send
signals to the thread for things like program termination.
--
Tom Porterfield
MS-MVP MCE
http://support.telop.org

Please post all follow-ups to the newsgroup only.
 
use Timer

--
/*
Vladimir Scherbina,
Ukraine, Kiev.
*/
Afei said:
hi,
I want to write a program that every some specific time(say, 15
minutes) do something. But i am out of mind how to do it? Should i
use threads or some other technologies?

Thanks.
Click to expand...
 
You can simply execute the program from the Windows Scheduler every 15
minutes.

You could write it as a Windows Service, and in between each execution of
its task, call Thread.Sleep(TimeSpan.FromMinutes(15))

Probably there are other ways as well; it depends on what you're trying to
accomplish, what else (if anything) the task needs to interact with and
whether or not it needs to interace with the user at all.

--Bob
 
Here's a quick timer example with a Forms application

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using System.Windows.Forms;

using System.Data;

namespace UsingTimer

{

/// <summary>

/// Summary description for Form1.

/// </summary>

public class Form1 : System.Windows.Forms.Form

{

private Timer timer = new Timer();

private System.Windows.Forms.TextBox m_Interval;

private System.Windows.Forms.Button button2;

private System.Windows.Forms.Button m_StartStop;

/// <summary>

/// Required designer variable.

/// </summary>

private System.ComponentModel.Container components = null;

public Form1()

{

//

// Required for Windows Form Designer support

//

InitializeComponent();

//

// TODO: Add any constructor code after InitializeComponent call

//

timer.Tick += new EventHandler(timer_Tick);

}

/// <summary>

/// Clean up any resources being used.

/// </summary>

protected override void Dispose( bool disposing )

{

if( disposing )

{

if (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.m_StartStop = new System.Windows.Forms.Button();

this.m_Interval = new System.Windows.Forms.TextBox();

this.button2 = new System.Windows.Forms.Button();

this.SuspendLayout();

//

// m_StartStop

//

this.m_StartStop.Location = new System.Drawing.Point(248, 16);

this.m_StartStop.Name = "m_StartStop";

this.m_StartStop.TabIndex = 0;

this.m_StartStop.Text = "StartTimer";

this.m_StartStop.Click += new System.EventHandler(this.button1_Click);

//

// m_Interval

//

this.m_Interval.Location = new System.Drawing.Point(16, 16);

this.m_Interval.Name = "m_Interval";

this.m_Interval.TabIndex = 1;

this.m_Interval.Text = "";

//

// button2

//

this.button2.Location = new System.Drawing.Point(160, 16);

this.button2.Name = "button2";

this.button2.TabIndex = 2;

this.button2.Text = "Set Interval";

this.button2.Click += new System.EventHandler(this.button2_Click);

//

// Form1

//

this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);

this.ClientSize = new System.Drawing.Size(360, 70);

this.Controls.Add(this.button2);

this.Controls.Add(this.m_Interval);

this.Controls.Add(this.m_StartStop);

this.Name = "Form1";

this.Text = "Timer Example";

this.ResumeLayout(false);

}

#endregion

/// <summary>

/// The main entry point for the application.

/// </summary>

[STAThread]

static void Main()

{

Application.Run(new Form1());

}

private void button2_Click(object sender, System.EventArgs e)

{

int interval = Int32.Parse(m_Interval.Text);

if ( interval < 1000 )

{

MessageBox.Show(

this,

"Interval are in milliseconds. You probably want to specify at least one "+

"thousand milliseconds otherwise you wont' be able to close this
application",

"ERROR",

MessageBoxButtons.OK,

MessageBoxIcon.Error);

return;

}

timer.Interval = interval;

}

private void timer_Tick(object sender, EventArgs e)

{

timer.Stop();

MessageBox.Show("The timer has gone off");

timer.Start();

}

private void button1_Click(object sender, System.EventArgs e)

{

if ( this.m_StartStop.Text == "StartTimer" )

{

timer.Start();

m_StartStop.Text = "StopTimer";

}

else

{

timer.Stop();

m_StartStop.Text = "StartTimer";

}

}

}

}


--
Jared Parsons [MSFT]
(e-mail address removed)
This posting is provided "AS IS" with no warranties, and confers no rights.
OR if you wish to include a script sample in your post please add "Use of
included script samples are subject to the terms specified at
http://www.microsoft.com/info/cpyright.htm"

Afei said:
hi,
I want to write a program that every some specific time(say, 15
minutes) do something. But i am out of mind how to do it? Should i
use threads or some other technologies?

Thanks.
Click to expand...
 
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