制作加密文本文件程序1.原理从源文本文件中按顺序读出每一个字符，然后把读出的字符转换为相应的ASCII码，将此ASCII码加上整数密钥Key，最后把所得结果再转回相应的字符并同时把它写入到另外一个文件中，这就是加密过程。解密码过程与加密过程刚好是相反的操作。2.界面设计新建一个工程，在Form1中添加一个Label，一个Edit和两个Button，程序的界面设置与布局如图所示。图一 界面布局-encryption produced a text file procedures. Principle from the source text file sequentially read out each character and then read out the characters into the corresponding ASCII, ASCII with this integer key Key, the final results were then put back to the corresponding character and turn it into another one of the documents This is the encryption process. Xie password and encryption process is exactly the opposite of operation. 2. Interface design of a new project, Form1 add a Label, a Edit Button and the two procedures are set up and interface layout shown in the figure. A layout map interface