C#简单读写文件，具体来说是使用StringCollection 类对TXT文本文件的操作，可向TXT中写入文字内容，读取出内容，程序做成了可视化界面，类似一个文本编辑器一样，比Windows的记事本功能还要少一些，主要是演示如何用C#读写文本格式的文件。-C# simple read and write files, specifically the use of class actions on StringCollection TXT text files can be written to the text in TXT, read out the contents of the program made a visual interface, similar to a text editor, like Windows than The notepad function even less, mainly is to demonstrate how to use C# to read and write files in text format.