Timer Stopped when form is disabled in Winform c#

Question

how to use a timer when the form is disabled in the c# windows form application. I have timer control in my winform and I have written a code in the tick event of the timer, but when my form is in disabled mode the timer control also disable, but as per my need I want to continue timer. Can anyone please help?

Piyush Pansuriya · Answer

Hi Nikunj, There is one solution to overcome that problem. you can use BackgroundWorker . It may be helps you while disable the form.

Nikunj Satasiya · Answer

Thank You Piyush and Rajnikant for your valuable answer, both the solutions are working well. I accepting the answer to both.

Rajanikant Hawaldar · Answer

Hi Nikunj Use System.Timers.Timer instead of System.Threading.Timer

Rajanikant Hawaldar · Answer

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 ; } } }