如何检查路径是否有效？ [英] how to check if the path is valid?

问题描述

我正在创建一个加载设置的程序，我想知道限制用户输入文本框的无效路径的最佳/简单方法是什么

i am creating a program that loads settings, i want to know what is the best/ easy way to restrict users from entering an invalid path to the textbox

推荐答案

尝试：

Try:

if (!Directory.Exists(path))
   {
   // Report problem
   ...
   }

您不能限制用户，但您可以警告他们输入了无效路径。实际上，这是错误的，您可以使用浏览器对话框来限制用户 [ ^ ]不允许写入文本框



检查无效路径的方法（如果你不想使用BrowserDialog）

You cannot restrict users, but you can warn them they entered invalid path. Actually, that is wrong, you can restrict users by using Browser Dialog[^] without allowing writing into the Textbox

The way to check for invalid path (if you don't want to use BrowserDialog)

if (System.IO.Directory.Exists() ) {
    MsgBox("You entered invalid folder path!", MsgBoxStyle.Exclamation);

}

将上面的支票放入文本框验证活动中。



如果这有帮助，请花些时间接受解决方案。谢谢。

Put the check above in textbox validating event.

If this helps, please take time to accept the solution. Thank you.

存在文件

File exists

if (!File.Exists(path))
   {
   // Report problem
   ...
   }

文件夹存在

Folder exists

if (!Directory.Exists(path))
   {
   // Report problem
   ...
   }

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