I have a situation, I am calling a method asynchronously, which does not
return values. If I make 100 call asynchronously, will the performance
go down?
My understanding is - I can't use threadpool, because FormA loads FormB
and which inturn calls a method Asynchronously. FormA may load 100
FormB, but FormB will call the method only once per instance.
My additional questions are,
a. I don't have a need to call endinvoke, What will happen to that child
thread, when it will die?
b. How do I control the child thread, i.e. terminate the child thread
created my the asycn call?
Thanks,
Venkat Sathiamurthy, PMP
Please see the below code:
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Threading;
namespace TestThreadHold
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Button button1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//Thread.CurrentThread.Name ="Master";
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <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.button1 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(64, 80);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(112, 23);
this.button1.TabIndex = 0;
this.button1.Text = "button1";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Controls.Add(this.button1);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
static void Main()
{
Application.Run(new Form1());
}
private void button1_Click(object sender, System.EventArgs e)
{
Form2 frm2 = new Form2 ();
frm2.Show ();
}
private void Form1_Load(object sender, System.EventArgs e)
{
}
}
}
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Threading;
namespace TestThreadHold
{
/// <summary>
/// Summary description for Form2.
/// </summary>
public class Form2 : System.Windows.Forms.Form
{
delegate void mydelegate();
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public Form2()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <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.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(40, 24);
this.button1.Name = "button1";
this.button1.TabIndex = 0;
this.button1.Text = "button1";
//
// button2
//
this.button2.Location = new System.Drawing.Point(40, 64);
this.button2.Name = "button2";
this.button2.TabIndex = 1;
this.button2.Text = "button2";
//
// Form2
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Name = "Form2";
this.Text = "Form2";
this.Load += new System.EventHandler(this.Form2_Load);
this.ResumeLayout(false);
}
#endregion
private void button1_Click(object sender, System.EventArgs e)
{
MessageBox.Show ("Test1");
}
private void button2_Click(object sender, System.EventArgs e)
{
MessageBox.Show ("Test2");
}
private void Form2_Load(object sender, System.EventArgs e)
{
mydelegate dl=new mydelegate(Form2_EventSubscribe);
dl.BeginInvoke(null,null);
}
private void Form2_EventSubscribe()
{
//Thread.CurrentThread.Name ="Worker Thread" + DateTime.Now.ToString ();
Thread.Sleep (new TimeSpan (0,0,0,5,0));
if("NO CONNECTION"=="NO CONNECTION")
{
this.button1.Click += new System.EventHandler(this.button1_Click);
this.button2.Click += new System.EventHandler(this.button2_Click);
this.MouseDown += new
System.Windows.Forms.MouseEventHandler(this.Form2_MouseDown);
}
else
{
this.button1.Click += new System.EventHandler(this.button1_Click);
this.button2.Click += new System.EventHandler(this.button2_Click);
MessageBox.Show ("Connection Succeed");
}
}
private void Form2_MouseDown(object sender,
System.Windows.Forms.MouseEventArgs e)
{
this.Close ();
}
}
}
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