代码用于两窗体的切换显示，由窗体1切换到窗体2，在窗体2输入文本信息，点击设定按钮，内容在窗体1显示-Code for the two forms of display switch, switch by form 1 to form 2, 2 input text information in the form, click the set button, the content in the form 1 shows