Multithreading probleam when button_click in windows.

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Hi all,
I need to implement Multithreading on button_click event.i am doing on buttion click i am updateing database values.if one my client is clicking continuesly with out break i need to create thread add in button_click and i need call method for update database value.can any one help me in this.
Thanks,
Naresh.G

Posted 27-Feb-12 3:12am

nareshgundapaneni

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Comments

[no name] 27-Feb-12 9:20am

What have you tried so far?

Amund Gjersøe 27-Feb-12 9:23am

Have you considered using asynchronous updating of the database? Asynchronous methods often starts with Begin.....

Sergey Alexandrovich Kryukov 27-Feb-12 12:39pm

To start with, tag your UI library and application type (WPF, Forms, ASP.NET, Silverlight, what?)
--SA

4 solutions

Solution 1

Here is the sample code to execute multi threading using button_click events

C#

public void ThreadRun( )
{
  // ur multi thread operation
}

Thread oThread = new Thread(new ThreadStart(ThreadRun));

private void Start_Click(object sender, EventArgs e)
{
    oThread.Start();
}

private void Cancel_Click(object sender, EventArgs e)
{
    oThread.Abort();

}

Posted 27-Feb-12 15:18pm

Ganesan Senthilvel

Solution 2

Take a look at the System.Threading.Tasks.Task class which makes it easier to work with tasks and also supports cancelation.

Uros

Posted 27-Feb-12 16:37pm

koleraba

Solution 3

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;

namespace WindowsFormsApplication6
{
public partial class Form1 : Form
{
int _digitsToCalc = 20;
private Thread currentTimeThread = null;
public Form1()
{
InitializeComponent();

currentTimeThread = new Thread(new ThreadStart(CountTime));
currentTimeThread.IsBackground = true;
}

public void CountTime()
{
while (true)
{
Invoke(new UpdateTimeDelegate(updateCurrentTime));
Thread.Sleep(1000);
}
}
private void updateCurrentTime()
{
randomNumbers.Text = DateTime.Now.ToLongTimeString();

currentTimeThread.Abort();
}
static List <string> _list = new List <string>();
private void start_Click(object sender, EventArgs e)
{

currentTimeThread.Start();//error is:Thread is running or terminated; it cannot restart.

}
}
public delegate void UpdateTimeDelegate();
}

Hi all this my code and i am geting error like this:Thread is running or terminated; it cannot restart.

Posted 27-Feb-12 18:03pm

nareshgundapaneni

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nareshgundapaneni · Accepted Answer · 2012-02-27T20:21:00

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;

namespace WindowsFormsApplication6
{
public partial class Form1 : Form
{
int _digitsToCalc = 20;
private Thread currentTimeThread = null;
public Form1()
{
InitializeComponent();
}

public void CountTime()
{
while (true)
{
Invoke(new UpdateTimeDelegate(updateCurrentTime));
Thread.Sleep(1000);
}
}
private void updateCurrentTime()
{
randomNumbers.Text = DateTime.Now.ToLongTimeString();

ManualResetEvent stopEvent = new ManualResetEvent(false);

}

int threadCount = 0;
private void start_Click(object sender, EventArgs e)
{
currentTimeThread = new Thread(new ThreadStart(CountTime));
currentTimeThread.IsBackground = true;
currentTimeThread.Name = "Thread ID: " + threadCount++;
currentTimeThread.Start();
label1.Text = currentTimeThread.Name.ToString();
}
}
public delegate void UpdateTimeDelegate();
}