本文介绍了检查列表框中单击的文件类型的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
如何在列表框中检查对象的文件类型?
How can I check the file type of an object in my listbox?
我要从在线服务器返回一个字符串列表，只是想单击一个末尾具有.folder文件类型的项目时触发该事件.
I'm returning a list of strings from an online server and simply wanting to have an event that gets fired when I click on an item that has a .folder file type at the end.
我尝试查找，但找不到任何东西.
I've tried looking but can't find anything.
有人可以提供链接或示例代码，以便我实现我想要实现的目标.
Can someone please provide a link or sample code so I can achieve what I would like to achieve.
推荐答案
您可以包括FileInfo程序集并使用FileInfo.Extension.
You could include the FileInfo assembly and use FileInfo.Extension.
FileInfo finfo = new FileInfo(fileName);
string fileName = finfo.Extension
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