C# adding text every five minutes

First, you need to create a Windows Forms application in Visual Studio. Then you add your TextBox and ListBox to the form and open the code file for it (right-click on Form1.cs or whatever your Form is called and select "View code").

To add the text in the TextBox to the ListBox every 5 minutes, you could use a System.Windows.Forms.Timer and the following code:

public partial class Form1 : Form
    {
        System.Windows.Forms.Timer _timer = new System.Windows.Forms.Timer();
        public Form1()
        {
            InitializeComponent();

            _timer.Interval = 300000; // 30000 ms = 5 mins
            _timer.Tick += _timer_Tick;
            _timer.Start();
        }

        void _timer_Tick(object sender, EventArgs e)
        {
            listBox1.Items.Add(textBox1.Text);
        }
}

A System.Windows.Forms.Timer is optimized for use in Windows Forms applications and performs the code in the Tick event handler on the UI thread.

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