title: Use timer with random interval
body: <p>I am trying to run the timer in random interval by using code below. The problem is that when I do this I am posted only 1 random number and I'm not sure how to fetch next random number with my code:</p>
  
  <pre><code>using System;
  using System.Windows.Forms;
  
  namespace Auto_Typer
  {
      public partial class AutoTyper : Form
      {
          public AutoTyper()
          {
              InitializeComponent();
  
              tmrInterval.Tick += new EventHandler(Interval);
  
              txtInterval.TextChanged += new EventHandler(TextChanged);
              txtMin.TextChanged += new EventHandler(TextChanged);
              txtMax.TextChanged += new EventHandler(TextChanged);
          }
  
          private void TextChanged(object sender, EventArgs e)
          {
              if (int.Parse(txtInterval.Text) &lt; 1 || int.Parse(txtMin.Text) &lt; 1 || int.Parse(txtMax.Text) &lt; 1)
              {
                  txtInterval.Text = "1";
                  txtMin.Text = "1";
                  txtMax.Text = "1";
              }
              else if (int.Parse(txtInterval.Text) &gt; 100)
              {
                  txtInterval.Text = "100";
                  txtMin.Text = "100";
                  txtMax.Text = "100";
              }
              else if (int.Parse(txtMin.Text) &gt;= int.Parse(txtMax.Text))
              {
                  txtMax.Text = (int.Parse(txtMin.Text) + 1).ToString();
              }
          }
  
          void Interval(object sender, EventArgs e)
          {
              SendKeys.Send(txtText.Text + ", " + tmrInterval.Interval + "{enter}");
          }
  
          private void btnStart_Click(object sender, EventArgs e)
          {
              if (tbType.SelectedTab == tbInterval)
              {
                  tmrInterval.Interval = int.Parse(txtInterval.Text) * 1000;
                  tmrInterval.Enabled = true;
              }
  
              if (tbType.SelectedTab == tbRange)
              {
                  Random random = new Random();
  
                  tmrInterval.Interval = (random.Next(int.Parse(txtMin.Text), int.Parse(txtMax.Text)) * 1000);
                  tmrInterval.Enabled = true;
              }
          }
  
          private void btnStop_Click(object sender, EventArgs e)
          {
              tmrInterval.Enabled = false;
          }
  
          private void btnExit_Click(object sender, EventArgs e)
          {
              this.Close();
          }
      }
  }
  </code></pre>