best way to compare four or more strings

Is there any shorter/simpler way to do this?

if (Button1.Text == Button2.Text || Button1.Text == Button3.Text || Button1.Text == Button4.Text ||
                Button2.Text == Button3.Text || Button2.Text == Button4.Text || Button3.Text == Button4.Text){
//do something
}

maybe LINQ or something.

Thanks in advance