Question

I want a code that when a user opens my program, a code start to do an action every 5 minutes. for example every 5 minutes a message alert comes on the screen.
And I want a code to stop this. For example when the user clicks on a button, this loop do not execute more.
Regards.

Answer 1

Like the others have mentioned, use a System.Windows.Forms.Timer if you are using WinForms. You’ll be able to drag a Timer from the toolbox to your form, then it appears below your form. Set the Interval = 300000 (5 * 60 * 1000 to covert to milliseconds), and Enabled = true

   public class Form1 : Form
   {
      public Form1()
      {
         InitializeComponent();
      }

      private void button1_Click(object sender, EventArgs e)
      {
         timer1.Enabled = false;
      }

      private void timer1_Tick(object sender, EventArgs e)
      {
         MessageBox.Show("Annoying message");
      }

         /// <summary>
      /// Required designer variable.
      /// </summary>
      private System.ComponentModel.IContainer components = null;

      /// <summary>
      /// Required method for Designer support - do not modify
      /// the contents of this method with the code editor.
      /// </summary>
      private void InitializeComponent()
      {
         this.components = new System.ComponentModel.Container();
         this.timer1 = new System.Windows.Forms.Timer(this.components);
         this.button1 = new System.Windows.Forms.Button();
         this.SuspendLayout();
         // 
         // timer1
         // 
         this.timer1.Enabled = true;
         this.timer1.Interval = 300000;
         this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
         // 
         // button1
         // 
         this.button1.Location = new System.Drawing.Point(89, 49);
         this.button1.Name = "button1";
         this.button1.Size = new System.Drawing.Size(75, 23);
         this.button1.TabIndex = 0;
         this.button1.Text = "stop timer";
         this.button1.UseVisualStyleBackColor = true;
         this.button1.Click += new System.EventHandler(this.button1_Click);
         // 
         // Form1
         // 
         this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
         this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
         this.ClientSize = new System.Drawing.Size(292, 266);
         this.Controls.Add(this.button1);
         this.Name = "Form1";
         this.Text = "Form1";
         this.ResumeLayout(false);

      }

      #endregion

      private System.Windows.Forms.Timer timer1;
      private System.Windows.Forms.Button button1;
 }