在C＃中关闭MessageBox后，如何强制按钮，TextBoxes在表单上重绘

I have a form with buttons, textBoxes and userControls on it. When a button is clicked, it calls a method in another class. In this class a Message box opens. When user clicks OK, the messageBox closes, and the class method proceeds for 10 or so seconds before ending. During this 10 seconds, what ever textBox, or button the message box was over still displays the messageBox (They are not getting repainted).I have a form with buttons, textBoxes and userC