Question

I have read that I can suppress this noise by defining a form accept button, which is something I am trying to avoid (I can point it at a hidden or inactive button I suppose, but since it’s not explicitly what I’m trying to do, I’m concerned about side effects)

I use the following snippet to trap the return key and it works just fine, the noise does not occur if I click the button manually.

    private void urlTextBox_KeyDown(object sender, KeyEventArgs e) {
        if ( e.KeyCode == Keys.Return ) 
        //if ( e.KeyValue.Equals(13) )
        {
            e.SuppressKeyPress = true;
            //e.Handled = true;
            goButton.PerformClick();
        }

I am targetting .NET 4.0 so I should be able to implement most ideas.

Answer 1

Give this a shot:

private void urlTextBox_KeyUp(object sender, KeyEventArgs e)
{
    if (e.KeyCode == Keys.Return)
    {                
        e.SuppressKeyPress = true;
    }
}
private void urlTextBox_KeyPress(object sender, KeyPressEventArgs e)
{
    if (e.KeyChar == (char)Keys.Return)
    {
        e.Handled = true;
        goButton.PerformClick();
    }
}

Source

It may also work with the KeyDown event but I haven’t tested it.