WinForm中提示Circular base class dependency involving 'TestEncryption.Form' and 'TestEncryption.Form&#3

最近想做一个可以选择文件、加密方式进行加密的小东西，于是画了一个WinForm界面，但当我把Form的name由Form1改为Form时，提示如下错误："Circular base class dependency involving 'TestEncryption.Form' and 'TestEncryption.Form'"

错误的原因就是：The inheritance list for a class includes a direct or indirect reference to itself. A class cannot inherit from itself.即类不能循环继承。

因为修改Form的name后，会出现下面这段代码：