sorry in my post i didn't mean AutoSizeChanged event but SizeChanged event:

private void Form1_SizeChanged(object sender, EventArgs e)
{
this.Refresh();
}

for minimize/maximize try AutoSizeChanged event:

private void Form1_AutoSizeChanged(object sender, EventArgs e)
{
this.Refresh();
}

If you open other programs (windows) over...

your description is a little bit confusing but let me guess: trigger the refresh() method for the form:

this.Refresh(); // for immediate redraw of the form and it's components

LOL YOU ARE FUNNY !
did he mention that Label5 has Text property set to "" or something else? i thing anyone can figur this out. So don't feel to SMART:twisted:

It's wrong. you assigned the string element every time to Label5.
This is correct:

protected void Button4_Click(object sender, EventArgs e)
{

string[] stringArray...