Timer Stopped when form is disabled in Winform c#

Hi Nikunj Satasiya,

I have created sample and tested, its working great. i am sharing code try this.

Form1.designer.cs file code :

namespace DisableForm
{
partial class Form1
{
///
/// Required designer variable.
///
private System.ComponentModel.IContainer components = null;
///
/// Clean up any resources being used.
///
/// true if managed resources should be disposed; otherwise, false.
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.button4 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(26, 100);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(75, 23);
this.button1.TabIndex = 0;
this.button1.Text = "Show";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(135, 100);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(125, 23);
this.button2.TabIndex = 1;
this.button2.Text = "Disable Form2";
this.button2.UseVisualStyleBackColor = true;
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.Location = new System.Drawing.Point(135, 139);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(125, 23);
this.button3.TabIndex = 2;
this.button3.Text = "Enable Form1";
this.button3.UseVisualStyleBackColor = true;
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// button4
//
this.button4.Location = new System.Drawing.Point(135, 177);
this.button4.Name = "button4";
this.button4.Size = new System.Drawing.Size(125, 23);
this.button4.TabIndex = 3;
this.button4.Text = "Disable Form1";
this.button4.UseVisualStyleBackColor = true;
this.button4.Click += new System.EventHandler(this.button4_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(282, 255);
this.Controls.Add(this.button4);
this.Controls.Add(this.button3);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.Button button4;
}
}

Form1.cs file code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace DisableForm
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
Form2 o = new Form2();
private void button1_Click(object sender, EventArgs e)
{
o.Show();
}
private void button2_Click(object sender, EventArgs e)
{
o.Enabled = false;
}
private void button3_Click(object sender, EventArgs e)
{
this.Enabled = true;
}
private void button4_Click(object sender, EventArgs e)
{
this.Enabled = false;
}
}
}

Form2.Designer.cs file code:

namespace DisableForm
{
partial class Form2
{
///
/// Required designer variable.
///
private System.ComponentModel.IContainer components = null;
///
/// Clean up any resources being used.
///
/// true if managed resources should be disposed; otherwise, false.
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.textBox1 = new System.Windows.Forms.TextBox();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(45, 74);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(100, 22);
this.textBox1.TabIndex = 0;
//
// button1
//
this.button1.Location = new System.Drawing.Point(175, 74);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(75, 23);
this.button1.TabIndex = 1;
this.button1.Text = "button1";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(45, 139);
this.button2.Name = "Start Timer";
this.button2.Size = new System.Drawing.Size(75, 23);
this.button2.TabIndex = 2;
this.button2.Text = "Disable";
this.button2.UseVisualStyleBackColor = true;
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.Location = new System.Drawing.Point(126, 139);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(75, 23);
this.button3.TabIndex = 3;
this.button3.Text = "Enable";
this.button3.UseVisualStyleBackColor = true;
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// Form2
//
this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(282, 255);
this.Controls.Add(this.button3);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.textBox1);
this.Name = "Form2";
this.Text = "Form2";
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button button3;
}
}

Form2.cs file code :

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Timers;
using System.Windows.Forms;
namespace DisableForm
{
public partial class Form2 : Form
{
static int Number = 0;
System.Timers.Timer timer = new System.Timers.Timer(500);
public Form2()
{
InitializeComponent();
timer.Elapsed += OnTimedEvent;
}
private void OnTimedEvent(object source, ElapsedEventArgs e)
{
while (true)
{
Thread.Sleep(500);
Action action = () =>
{
textBox1.Text = Interlocked.Increment(ref Number).ToString();
};
Number++;
if (textBox1.InvokeRequired)
textBox1.Invoke(action);
else
action();
}
}
private void button1_Click(object sender, EventArgs e)
{
timer.Start();
}
private void button2_Click(object sender, EventArgs e)
{
this.Enabled = false;
}
private void button3_Click(object sender, EventArgs e)
{
this.Enabled = true;
}
}
}

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

Nikunj Satasiya7y ago
Thank You Piyush and Rajnikant for your valuable answer, both the solutions are working well. I accepting the answer to both.
Rajanikant Hawaldar7y ago
Hi Nikunj

Use System.Timers.Timer instead of System.Threading.Timer
Piyush Pansuriya7y ago
Hi Nikunj,
There is one solution to overcome that problem. you can use BackgroundWorker.

It may be helps you while disable the form.
Rajanikant Hawaldar7y ago
Hi Nikunj Satasiya,

I have created sample and tested, its working great. i am sharing code try this.

Form1.designer.cs file code :
namespace DisableForm
{
partial class Form1
{
///
/// Required designer variable.
///
private System.ComponentModel.IContainer components = null;
///
/// Clean up any resources being used.
///
/// true if managed resources should be disposed; otherwise, false.
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.button4 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(26, 100);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(75, 23);
this.button1.TabIndex = 0;
this.button1.Text = "Show";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(135, 100);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(125, 23);
this.button2.TabIndex = 1;
this.button2.Text = "Disable Form2";
this.button2.UseVisualStyleBackColor = true;
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.Location = new System.Drawing.Point(135, 139);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(125, 23);
this.button3.TabIndex = 2;
this.button3.Text = "Enable Form1";
this.button3.UseVisualStyleBackColor = true;
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// button4
//
this.button4.Location = new System.Drawing.Point(135, 177);
this.button4.Name = "button4";
this.button4.Size = new System.Drawing.Size(125, 23);
this.button4.TabIndex = 3;
this.button4.Text = "Disable Form1";
this.button4.UseVisualStyleBackColor = true;
this.button4.Click += new System.EventHandler(this.button4_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(282, 255);
this.Controls.Add(this.button4);
this.Controls.Add(this.button3);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.Button button4;
}
}
Form1.cs file code:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace DisableForm
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
Form2 o = new Form2();
private void button1_Click(object sender, EventArgs e)
{
o.Show();
}
private void button2_Click(object sender, EventArgs e)
{
o.Enabled = false;
}
private void button3_Click(object sender, EventArgs e)
{
this.Enabled = true;
}
private void button4_Click(object sender, EventArgs e)
{
this.Enabled = false;
}
}
}
Form2.Designer.cs file code:
namespace DisableForm
{
partial class Form2
{
///
/// Required designer variable.
///
private System.ComponentModel.IContainer components = null;
///
/// Clean up any resources being used.
///
/// true if managed resources should be disposed; otherwise, false.
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.textBox1 = new System.Windows.Forms.TextBox();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(45, 74);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(100, 22);
this.textBox1.TabIndex = 0;
//
// button1
//
this.button1.Location = new System.Drawing.Point(175, 74);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(75, 23);
this.button1.TabIndex = 1;
this.button1.Text = "button1";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(45, 139);
this.button2.Name = "Start Timer";
this.button2.Size = new System.Drawing.Size(75, 23);
this.button2.TabIndex = 2;
this.button2.Text = "Disable";
this.button2.UseVisualStyleBackColor = true;
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.Location = new System.Drawing.Point(126, 139);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(75, 23);
this.button3.TabIndex = 3;
this.button3.Text = "Enable";
this.button3.UseVisualStyleBackColor = true;
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// Form2
//
this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(282, 255);
this.Controls.Add(this.button3);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.textBox1);
this.Name = "Form2";
this.Text = "Form2";
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button button3;
}
}
Form2.cs file code :
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Timers;
using System.Windows.Forms;
namespace DisableForm
{
public partial class Form2 : Form
{
static int Number = 0;
System.Timers.Timer timer = new System.Timers.Timer(500);
public Form2()
{
InitializeComponent();
timer.Elapsed += OnTimedEvent;
}
private void OnTimedEvent(object source, ElapsedEventArgs e)
{
while (true)
{
Thread.Sleep(500);
Action action = () =>
{
textBox1.Text = Interlocked.Increment(ref Number).ToString();
};
Number++;
if (textBox1.InvokeRequired)
textBox1.Invoke(action);
else
action();
}
}
private void button1_Click(object sender, EventArgs e)
{
timer.Start();
}
private void button2_Click(object sender, EventArgs e)
{
this.Enabled = false;
}
private void button3_Click(object sender, EventArgs e)
{
this.Enabled = true;
}
}
}