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CachedFileStream(String, FileMode, FileSystemRights, FileShare, Int32, FileOptions, FileSecurity) Constructor
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Initializes a new instance of the
FileStream class with the specified path, creation mode, access rights and sharing permission, the buffer size, additional file options, access control and audit security.
Namespace: GSF.IOAssembly: GSF.Core (in GSF.Core.dll) Version: 2.4.207-beta+1781b796b2aa7a54013a031eb432fe4ccee31867
Syntax GSF.IO.CachedFileStream = function(path, mode, rights, share, blockSize, options, fileSecurity);
View SourceParameters
- path String
- A relative or absolute path for the file that the current FileStream object will encapsulate.
- mode FileMode
- A constant that determines how to open or create the file.
- rights FileSystemRights
- A constant that determines the access rights to use when creating access and audit rules for the file.
- share FileShare
- A constant that determines how the file will be shared by processes.
- blockSize Int32
- A positive Int32 value greater than 0 indicating the block size. For blockSize values between one and eight, the actual block size is set to eight bytes.
- options FileOptions
- A constant that specifies additional file options.
- fileSecurity FileSecurity
- A constant that determines the access control and audit security for the file.
Exceptions Exception | Condition |
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ArgumentNullException | path is null. |
ArgumentException | path is an empty string (""), contains only white space, or contains one or more invalid characters. -or-path refers to a non-file device, such as "con:", "com1:", "lpt1:", etc. in an NTFS environment. |
NotSupportedException | path refers to a non-file device, such as "con:", "com1:", "lpt1:", etc. in a non-NTFS environment. |
ArgumentOutOfRangeException | blockSize is negative or zero.-or- mode, access, or share contain an invalid value. |
FileNotFoundException | The file cannot be found, such as when mode is FileMode.Truncate or FileMode.Open, and the file specified by path does not exist. The file must already exist in these modes. |
IOException | An I/O error, such as specifying FileMode.CreateNew when the file specified by path already exists, occurred. -or-The stream has been closed. |
SecurityException | The caller does not have the required permission. |
DirectoryNotFoundException | The specified path is invalid, such as being on an unmapped drive. |
UnauthorizedAccessException | The access requested is not permitted by the operating system for the specified path, such as when access is Write or ReadWrite and the file or directory is set for read-only access. -or-Encrypted is specified for options, but file encryption is not supported on the current platform. |
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. |
PlatformNotSupportedException | The current operating system is not Windows NT or later. |
See Also