Enum FileMode

Namespace

CMS.IO

Assembly

CMS.IO.dll

Specifies how the operating system should open a file.

public enum FileMode

Extension Methods

DataExtensions.With<T>(T, Action<T>)

QueryExtensions.AsLiteral<T>(T)

QueryExtensions.AsValue<T>(T, bool)

EnumStringRepresentationExtensions.ToStringRepresentation<TEnum>(TEnum)

EnumStringRepresentationExtensions.ToStringRepresentation(Enum)

Fields

Append = 6

Opens the file if it exists and seeks to the end of the file, or creates a new file. FileMode.Append can only be used in conjunction with FileAccess.Write. Attempting to seek to a position before the end of the file will throw an System.IO.IOException and any attempt to read fails and throws an System.NotSupportedException.

Create = 2

Specifies that the operating system should create a new file. If the file already exists, it will be overwritten. This requires System.Security.Permissions.FileIOPermissionAccess.Write. System.IO.FileMode.Create is equivalent to requesting that if the file does not exist, use System.IO.FileMode.CreateNew; otherwise, use System.IO.FileMode.Truncate.

CreateNew = 1

Specifies that the operating system should create a new file. This requires System.Security.Permissions.FileIOPermissionAccess.Write. If the file already exists, an System.IO.IOException is thrown.

Open = 3

Specifies that the operating system should open an existing file. The ability to open the file is dependent on the value specified by System.IO.FileAccess. A System.IO.FileNotFoundException is thrown if the file does not exist.

OpenOrCreate = 4

Specifies that the operating system should open a file if it exists; otherwise, a new file should be created. If the file is opened with FileAccess.Read, System.Security.Permissions.FileIOPermissionAccess.Read is required. If the file access is FileAccess.Write then System.Security.Permissions.FileIOPermissionAccess.Write is required. If the file is opened with FileAccess.ReadWrite, both System.Security.Permissions.FileIOPermissionAccess.Read and System.Security.Permissions.FileIOPermissionAccess.Write are required. If the file access is FileAccess.Append, then System.Security.Permissions.FileIOPermissionAccess.Append is required.

Truncate = 5

Specifies that the operating system should open an existing file. Once opened, the file should be truncated so that its size is zero bytes. This requires System.Security.Permissions.FileIOPermissionAccess.Write. Attempts to read from a file opened with Truncate cause an exception.