本实例主要实现了等待窗体与主窗体之间的自然过度，并且实现用户输入数据的有效性，代码较为简单，如果是大神，请自动忽视。 注：本实例中所有代码均为本人学习思考所实现，如有雷同之处，不胜荣幸！-Examples of the main wait for between form and main forms of natural excessive, and the realization of the effectiveness of the user input data, the code is