Question

I have the following code-

    private void button1_Click(object sender, EventArgs e)
    {
        _soundplayer.Play();
        timer1_Tick();

    }


    private void timer1_Tick()
    {
        pictureBox1.Image = imageList1.Images[imgIndex++];

    }

For some reason this brings back the error in the Form1.Designer.cs –

Error 1 No overload for 'timer1_Tick' matches delegate 'System.EventHandler'

When button1 is clicked the image in pictureBox1 should change every 2 seconds with the timer tick, however I can’t get past this error. Please advise.

Answer 1

The Tick event is an event of type EventHandler. It requires two arguments for the event handler:

private void timer1_Tick(object sender, EventArgs e)
{
    pictureBox1.Image = imageList1.Images[imgIndex++];
}

Which requires you to modify the Click event handler like this:

private void button1_Click(object sender, EventArgs e)
{
    _soundplayer.Play();
    timer1_Tick(this, EventArgs.Empty);
}

Using the designer to add event handlers can keep you out of trouble like this. Select the timer, click the lightning bolt icon in the Properties window and double-click Tick.