Probieren Sie diese Methode, die versuchen würde, für alle möglichen Ausnahmen Szenarien zu decken.Es würde für fast alle Windows-bezogenen Pfade funktionieren.
/// <summary>
/// Validate the Path. If path is relative append the path to the project directory by default.
/// </summary>
/// <param name="path">Path to validate</param>
/// <param name="RelativePath">Relative path</param>
/// <param name="Extension">If want to check for File Path</param>
/// <returns></returns>
private static bool ValidateDllPath(ref string path, string RelativePath = "", string Extension = "") {
// Check if it contains any Invalid Characters.
if (path.IndexOfAny(Path.GetInvalidPathChars()) == -1) {
try {
// If path is relative take %IGXLROOT% as the base directory
if (!Path.IsPathRooted(path)) {
if (string.IsNullOrEmpty(RelativePath)) {
// Exceptions handled by Path.GetFullPath
// ArgumentException path is a zero-length string, contains only white space, or contains one or more of the invalid characters defined in GetInvalidPathChars. -or- The system could not retrieve the absolute path.
//
// SecurityException The caller does not have the required permissions.
//
// ArgumentNullException path is null.
//
// NotSupportedException path contains a colon (":") that is not part of a volume identifier (for example, "c:\").
// PathTooLongException The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
// RelativePath is not passed so we would take the project path
path = Path.GetFullPath(RelativePath);
} else {
// Make sure the path is relative to the RelativePath and not our project directory
path = Path.Combine(RelativePath, path);
}
}
// Exceptions from FileInfo Constructor:
// System.ArgumentNullException:
// fileName is null.
//
// System.Security.SecurityException:
// The caller does not have the required permission.
//
// System.ArgumentException:
// The file name is empty, contains only white spaces, or contains invalid characters.
//
// System.IO.PathTooLongException:
// The specified path, file name, or both exceed the system-defined maximum
// length. For example, on Windows-based platforms, paths must be less than
// 248 characters, and file names must be less than 260 characters.
//
// System.NotSupportedException:
// fileName contains a colon (:) in the middle of the string.
FileInfo fileInfo = new FileInfo(path);
// Exceptions using FileInfo.Length:
// System.IO.IOException:
// System.IO.FileSystemInfo.Refresh() cannot update the state of the file or
// directory.
//
// System.IO.FileNotFoundException:
// The file does not exist.-or- The Length property is called for a directory.
bool throwEx = fileInfo.Length == -1;
// Exceptions using FileInfo.IsReadOnly:
// System.UnauthorizedAccessException:
// Access to fileName is denied.
// The file described by the current System.IO.FileInfo object is read-only.-or-
// This operation is not supported on the current platform.-or- The caller does
// not have the required permission.
throwEx = fileInfo.IsReadOnly;
if (!string.IsNullOrEmpty(Extension)) {
// Validate the Extension of the file.
if (Path.GetExtension(path).Equals(Extension, StringComparison.InvariantCultureIgnoreCase)) {
// Trim the Library Path
path = path.Trim();
return true;
} else {
return false;
}
} else {
return true;
}
} catch (ArgumentNullException) {
// System.ArgumentNullException:
// fileName is null.
} catch (System.Security.SecurityException) {
// System.Security.SecurityException:
// The caller does not have the required permission.
} catch (ArgumentException) {
// System.ArgumentException:
// The file name is empty, contains only white spaces, or contains invalid characters.
} catch (UnauthorizedAccessException) {
// System.UnauthorizedAccessException:
// Access to fileName is denied.
} catch (PathTooLongException) {
// System.IO.PathTooLongException:
// The specified path, file name, or both exceed the system-defined maximum
// length. For example, on Windows-based platforms, paths must be less than
// 248 characters, and file names must be less than 260 characters.
} catch (NotSupportedException) {
// System.NotSupportedException:
// fileName contains a colon (:) in the middle of the string.
} catch (FileNotFoundException) {
// System.FileNotFoundException
// The exception that is thrown when an attempt to access a file that does not
// exist on disk fails.
} catch (IOException) {
// System.IO.IOException:
// An I/O error occurred while opening the file.
} catch (Exception) {
// Unknown Exception. Might be due to wrong case or nulll checks.
}
} else {
// Path contains invalid characters
}
return false;
}
Besteht die "nicht, dass es beendet wird", die Validierung der Ordner vorhanden oder nicht? Was sind die Grenzen des Schecks? Dass das Laufwerk existiert und dass alle Zeichen gültig sind? – BenAlabaster