How to Solve the 'System.IO.PathTooLongException' Error in Windows?

Best way to resolve file path too long exception

The "System.IO.PathTooLongException" error occurs when the file path exceeds the maximum path length limit, which is typically 260 characters on Windows systems. To resolve this issue, here are some workarounds you can consider:

1. Understanding Path Length Limitations:

As per the Microsoft documentation on Naming Files, Paths, and Namespaces, the maximum path length in the Windows API is 260 characters. This includes the drive letter, colon, backslash, file or folder names separated by backslashes, and a terminating null character.

2. Workarounds:

a. Sharing a Subfolder:

Consider sharing a subfolder within a longer path to reduce the length of the absolute path.

b. Using SUBST Command:

You can use the SUBST command on the command line to assign a drive letter to a specific subfolder, effectively shortening the path.

c. Using AddConnection Method:

In Visual Basic, you can use the AddConnection method to map a drive letter to a path, reducing the overall path length.

3. Code Modifications:

In your provided code, the issue may arise when constructing the file path in the "dwnEachFile" method. Consider shortening the path by only including the necessary subfolders and filenames to stay within the 260-character limit.

By implementing these workarounds and adjusting your code accordingly, you can resolve the file path too long exception and successfully download files with long paths.

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