Asp.net vb read files in directory

Returns the names of files including their paths that match the specified search pattern in the specified directory, using a value to determine whether to search subdirectories. An array of the full names including paths for the files in the specified directory, or an empty array if no files are found. NET Framework and. NET Core versions older than 2. You can query for invalid characters by using the GetInvalidPathChars method.

The following example demonstrates how to use the GetFiles method to return file names from a user-specified location. The example is configured to catch all errors common to this method.

The EnumerateFiles and GetFiles methods differ as follows: When you use EnumerateFiles , you can start enumerating the collection of names before the whole collection is returned; when you use GetFiles , you must wait for the whole array of names to be returned before you can access the array.

Therefore, when you are working with many files and directories, EnumerateFiles can be more efficient. The path parameter can specify relative or absolute path information. Relative path information is interpreted as relative to the current working directory.

To obtain the current working directory, see GetCurrentDirectory. The order of the returned file names is not guaranteed; use the Sort method if a specific sort order is required. The path is not valid because it is Nothing ArgumentNullException. The path exceeds the system-defined maximum length PathTooLongException. A file or directory name in the path contains a colon : or is in an invalid format NotSupportedException.

The user lacks necessary permissions to view the path SecurityException. The user lacks necessary permissions UnauthorizedAccessException.

Skip to main content. So what's your question? Does your account running your IIS service have access to that directory? Accept Solution Reject Solution. Normally, Web applications are executed in a sandboxed environment which does not allow the access to the file system.

Moreover, there a no situations when hard-code paths names are useful. Using them kills portability and maintenance of the application. On some other system, you may not have some directory anymore, so what would you do?

Posted Sep am Sergey Alexandrovich Kryukov. Add your solution here. OK Paste as. Treat my content as plain text, not as HTML. Existing Members Sign in to your account. This email is in use. End Sub. If treeNode Is Nothing Then. Add directoryNode. MakeRelativeUri New Uri file. Add fileNode. PopulateTreeView directory, directoryNode. View Demo. Related Articles. Add Comments. Thank you for the feedback. The comment is now awaiting moderation. You will be notified via email when the author replies to your comment.