如何在执行Process.Start之前刷新表单对象属性的缓冲区？

On a button click, I make several changes to form elements (hiding some, showing some, bringing some to front, etc.). After those form element changes are made, I run an external process with a Process.Start(). However, even those those form element layout changes are sequentially coded before the Process.Start() call, they're not being executed/displayed BEFORE my Process.Start().On a button click, I make several changes to fo