Thread Safety Example

Thread Safety

→ It's new in .Net 2.0.

→ It's used to prevent DeadLock.

→ Thread Safety is a technique that allows us cross thread operation in a safe manor.

→ Important properties:

→ CheckForIllegalThreadCalls: It's bydefault True. Gets or Sets a value indicating whether to calls on the wrong thread that access a control's System.Windows.Forms.Control.Handle Property when an application is being debugged.

→ InvokeRequire(T, F): it is a property of Control. Default value is true. It means control is in different domain and calling is being done from different domain.

drag and drop two textbox and a button on the page.

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 Test_Thread1

{

public partial class Form1 : Form

{

ThreadStart ts1,ts2;

Thread th1,th2;

public Form1()

{

InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)

{

ts1 = new ThreadStart(abc);

th1 = new Thread(ts1);

th1.Start();

ts2 = new ThreadStart(xyz);

th2 = new Thread(ts2);

th2.Start();

}

private void abc()

{

for (int i = 0; i < 20; i++)

{

mno(textBox1, "IndiaMART InterMESH LTD.");

}

}

private void xyz()

{

for (int i = 0; i < 20; i++)

{

mno(textBox2, "IndiaMART InterMESH LTD New");

}

}

private delegate void MyDelegate(TextBox t1, string S);

private void mno(TextBox t1, string S)

{

if (t1.InvokeRequired)

{

MyDelegate dd = new MyDelegate(mno);

t1.Invoke(dd, t1, S);

}

else

{

t1.Text += Environment.NewLine + S;

}

}

}

}